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Finding the Fourth Proportional to 1,082.77, 1,494.21 and 585.40

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Solution

The fourth proportional to 1,082.77, 1,494.21 and 585.40 is: 807.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,082.77 : 1,494.21 = 585.40 : x
  2. Step 2: Convert to fraction form
    1,082.77/1,494.21 = 585.40/x
  3. Step 3: Cross multiply
    1,082.77x = 1,494.21 × 585.40
  4. Step 4: Simplify right side
    1,082.77x = 874,710.53
  5. Step 5: Solve for x
    x = 874,710.53/1,082.77
  6. Step 6: Final answer
    x = 807.85

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.