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Finding the Fourth Proportional to 63.77, 88.13 and 58.91

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Solution

The fourth proportional to 63.77, 88.13 and 58.91 is: 81.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.77 : 88.13 = 58.91 : x
  2. Step 2: Convert to fraction form
    63.77/88.13 = 58.91/x
  3. Step 3: Cross multiply
    63.77x = 88.13 × 58.91
  4. Step 4: Simplify right side
    63.77x = 5,191.74
  5. Step 5: Solve for x
    x = 5,191.74/63.77
  6. Step 6: Final answer
    x = 81.41

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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.