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Finding the Fourth Proportional to 61.13, 84.83 and 60.55

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Solution

The fourth proportional to 61.13, 84.83 and 60.55 is: 84.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.13 : 84.83 = 60.55 : x
  2. Step 2: Convert to fraction form
    61.13/84.83 = 60.55/x
  3. Step 3: Cross multiply
    61.13x = 84.83 × 60.55
  4. Step 4: Simplify right side
    61.13x = 5,135.94
  5. Step 5: Solve for x
    x = 5,135.94/61.13
  6. Step 6: Final answer
    x = 84.01

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.