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Finding the Fourth Proportional to 616.66, 925.18 and 291.98

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Solution

The fourth proportional to 616.66, 925.18 and 291.98 is: 438.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.66 : 925.18 = 291.98 : x
  2. Step 2: Convert to fraction form
    616.66/925.18 = 291.98/x
  3. Step 3: Cross multiply
    616.66x = 925.18 × 291.98
  4. Step 4: Simplify right side
    616.66x = 270,134.06
  5. Step 5: Solve for x
    x = 270,134.06/616.66
  6. Step 6: Final answer
    x = 438.06

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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.