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Finding the Fourth Proportional to 42.58, 63.84 and 23.32

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Solution

The fourth proportional to 42.58, 63.84 and 23.32 is: 34.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    42.58 : 63.84 = 23.32 : x
  2. Step 2: Convert to fraction form
    42.58/63.84 = 23.32/x
  3. Step 3: Cross multiply
    42.58x = 63.84 × 23.32
  4. Step 4: Simplify right side
    42.58x = 1,488.43
  5. Step 5: Solve for x
    x = 1,488.43/42.58
  6. Step 6: Final answer
    x = 34.96

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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.