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Finding the Fourth Proportional to 616.12, 924.18 and 291.40

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Solution

The fourth proportional to 616.12, 924.18 and 291.40 is: 437.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.12 : 924.18 = 291.40 : x
  2. Step 2: Convert to fraction form
    616.12/924.18 = 291.40/x
  3. Step 3: Cross multiply
    616.12x = 924.18 × 291.40
  4. Step 4: Simplify right side
    616.12x = 269,306.05
  5. Step 5: Solve for x
    x = 269,306.05/616.12
  6. Step 6: Final answer
    x = 437.10

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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.