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Finding the Fourth Proportional to 60.77, 91.17 and 58.02

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Solution

The fourth proportional to 60.77, 91.17 and 58.02 is: 87.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.77 : 91.17 = 58.02 : x
  2. Step 2: Convert to fraction form
    60.77/91.17 = 58.02/x
  3. Step 3: Cross multiply
    60.77x = 91.17 × 58.02
  4. Step 4: Simplify right side
    60.77x = 5,289.68
  5. Step 5: Solve for x
    x = 5,289.68/60.77
  6. Step 6: Final answer
    x = 87.05

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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.