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Finding the Fourth Proportional to 616.23, 924.21 and 307.85

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Solution

The fourth proportional to 616.23, 924.21 and 307.85 is: 461.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.23 : 924.21 = 307.85 : x
  2. Step 2: Convert to fraction form
    616.23/924.21 = 307.85/x
  3. Step 3: Cross multiply
    616.23x = 924.21 × 307.85
  4. Step 4: Simplify right side
    616.23x = 284,513.43
  5. Step 5: Solve for x
    x = 284,513.43/616.23
  6. Step 6: Final answer
    x = 461.70

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.