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Finding the Fourth Proportional to 63.68, 87.41 and 58.22

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Solution

The fourth proportional to 63.68, 87.41 and 58.22 is: 79.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.68 : 87.41 = 58.22 : x
  2. Step 2: Convert to fraction form
    63.68/87.41 = 58.22/x
  3. Step 3: Cross multiply
    63.68x = 87.41 × 58.22
  4. Step 4: Simplify right side
    63.68x = 5,088.28
  5. Step 5: Solve for x
    x = 5,088.28/63.68
  6. Step 6: Final answer
    x = 79.90

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.