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Finding the Fourth Proportional to 42.83, 64.16 and 29.97

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Solution

The fourth proportional to 42.83, 64.16 and 29.97 is: 44.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    42.83 : 64.16 = 29.97 : x
  2. Step 2: Convert to fraction form
    42.83/64.16 = 29.97/x
  3. Step 3: Cross multiply
    42.83x = 64.16 × 29.97
  4. Step 4: Simplify right side
    42.83x = 1,922.88
  5. Step 5: Solve for x
    x = 1,922.88/42.83
  6. Step 6: Final answer
    x = 44.90

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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.