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Finding the Fourth Proportional to 42.33, 63.39 and 35.11

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Solution

The fourth proportional to 42.33, 63.39 and 35.11 is: 52.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    42.33 : 63.39 = 35.11 : x
  2. Step 2: Convert to fraction form
    42.33/63.39 = 35.11/x
  3. Step 3: Cross multiply
    42.33x = 63.39 × 35.11
  4. Step 4: Simplify right side
    42.33x = 2,225.62
  5. Step 5: Solve for x
    x = 2,225.62/42.33
  6. Step 6: Final answer
    x = 52.58

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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.