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Finding the Fourth Proportional to 611.57, 844.16 and 464.19

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Solution

The fourth proportional to 611.57, 844.16 and 464.19 is: 640.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.57 : 844.16 = 464.19 : x
  2. Step 2: Convert to fraction form
    611.57/844.16 = 464.19/x
  3. Step 3: Cross multiply
    611.57x = 844.16 × 464.19
  4. Step 4: Simplify right side
    611.57x = 391,848.31
  5. Step 5: Solve for x
    x = 391,848.31/611.57
  6. Step 6: Final answer
    x = 640.73

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.