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Finding the Fourth Proportional to 616.66, 926.54 and 397.42

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Solution

The fourth proportional to 616.66, 926.54 and 397.42 is: 597.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.66 : 926.54 = 397.42 : x
  2. Step 2: Convert to fraction form
    616.66/926.54 = 397.42/x
  3. Step 3: Cross multiply
    616.66x = 926.54 × 397.42
  4. Step 4: Simplify right side
    616.66x = 368,225.53
  5. Step 5: Solve for x
    x = 368,225.53/616.66
  6. Step 6: Final answer
    x = 597.13

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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.