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Finding the Fourth Proportional to 60.62, 83.73 and 55.15

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Solution

The fourth proportional to 60.62, 83.73 and 55.15 is: 76.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.62 : 83.73 = 55.15 : x
  2. Step 2: Convert to fraction form
    60.62/83.73 = 55.15/x
  3. Step 3: Cross multiply
    60.62x = 83.73 × 55.15
  4. Step 4: Simplify right side
    60.62x = 4,617.71
  5. Step 5: Solve for x
    x = 4,617.71/60.62
  6. Step 6: Final answer
    x = 76.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.