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Finding the Fourth Proportional to 616.69, 924.31 and 342.30

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Solution

The fourth proportional to 616.69, 924.31 and 342.30 is: 513.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.69 : 924.31 = 342.30 : x
  2. Step 2: Convert to fraction form
    616.69/924.31 = 342.30/x
  3. Step 3: Cross multiply
    616.69x = 924.31 × 342.30
  4. Step 4: Simplify right side
    616.69x = 316,391.31
  5. Step 5: Solve for x
    x = 316,391.31/616.69
  6. Step 6: Final answer
    x = 513.05

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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.