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Finding the Fourth Proportional to 616.55, 924.22 and 307.94

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Solution

The fourth proportional to 616.55, 924.22 and 307.94 is: 461.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.55 : 924.22 = 307.94 : x
  2. Step 2: Convert to fraction form
    616.55/924.22 = 307.94/x
  3. Step 3: Cross multiply
    616.55x = 924.22 × 307.94
  4. Step 4: Simplify right side
    616.55x = 284,604.31
  5. Step 5: Solve for x
    x = 284,604.31/616.55
  6. Step 6: Final answer
    x = 461.61

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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.