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Finding the Fourth Proportional to 60.10, 90.61 and 55.85

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Solution

The fourth proportional to 60.10, 90.61 and 55.85 is: 84.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.10 : 90.61 = 55.85 : x
  2. Step 2: Convert to fraction form
    60.10/90.61 = 55.85/x
  3. Step 3: Cross multiply
    60.10x = 90.61 × 55.85
  4. Step 4: Simplify right side
    60.10x = 5,059.98
  5. Step 5: Solve for x
    x = 5,059.98/60.10
  6. Step 6: Final answer
    x = 84.20

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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.