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Finding the Fourth Proportional to 88.39, 133.04 and 62.88

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Solution

The fourth proportional to 88.39, 133.04 and 62.88 is: 94.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.39 : 133.04 = 62.88 : x
  2. Step 2: Convert to fraction form
    88.39/133.04 = 62.88/x
  3. Step 3: Cross multiply
    88.39x = 133.04 × 62.88
  4. Step 4: Simplify right side
    88.39x = 8,365.21
  5. Step 5: Solve for x
    x = 8,365.21/88.39
  6. Step 6: Final answer
    x = 94.64

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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.