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Finding the Fourth Proportional to 616.65, 925.04 and 324.30

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Solution

The fourth proportional to 616.65, 925.04 and 324.30 is: 486.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.65 : 925.04 = 324.30 : x
  2. Step 2: Convert to fraction form
    616.65/925.04 = 324.30/x
  3. Step 3: Cross multiply
    616.65x = 925.04 × 324.30
  4. Step 4: Simplify right side
    616.65x = 299,988.85
  5. Step 5: Solve for x
    x = 299,988.85/616.65
  6. Step 6: Final answer
    x = 486.48

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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.