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Finding the Fourth Proportional to 621.49, 932.24 and 279.25

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Solution

The fourth proportional to 621.49, 932.24 and 279.25 is: 418.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.49 : 932.24 = 279.25 : x
  2. Step 2: Convert to fraction form
    621.49/932.24 = 279.25/x
  3. Step 3: Cross multiply
    621.49x = 932.24 × 279.25
  4. Step 4: Simplify right side
    621.49x = 260,328.02
  5. Step 5: Solve for x
    x = 260,328.02/621.49
  6. Step 6: Final answer
    x = 418.88

Related Problems

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Half scale
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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.