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Finding the Fourth Proportional to 60.62, 91.25 and 55.03

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Solution

The fourth proportional to 60.62, 91.25 and 55.03 is: 82.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.62 : 91.25 = 55.03 : x
  2. Step 2: Convert to fraction form
    60.62/91.25 = 55.03/x
  3. Step 3: Cross multiply
    60.62x = 91.25 × 55.03
  4. Step 4: Simplify right side
    60.62x = 5,021.49
  5. Step 5: Solve for x
    x = 5,021.49/60.62
  6. Step 6: Final answer
    x = 82.84

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.