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Finding the Fourth Proportional to 895.66, 1,236 and 502.78

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Solution

The fourth proportional to 895.66, 1,236 and 502.78 is: 693.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.66 : 1,236 = 502.78 : x
  2. Step 2: Convert to fraction form
    895.66/1,236 = 502.78/x
  3. Step 3: Cross multiply
    895.66x = 1,236 × 502.78
  4. Step 4: Simplify right side
    895.66x = 621,436.08
  5. Step 5: Solve for x
    x = 621,436.08/895.66
  6. Step 6: Final answer
    x = 693.83

Related Problems

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Half scale
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Double scale
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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.