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Finding the Fourth Proportional to 43.14, 64.78 and 29.48

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Solution

The fourth proportional to 43.14, 64.78 and 29.48 is: 44.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.14 : 64.78 = 29.48 : x
  2. Step 2: Convert to fraction form
    43.14/64.78 = 29.48/x
  3. Step 3: Cross multiply
    43.14x = 64.78 × 29.48
  4. Step 4: Simplify right side
    43.14x = 1,909.32
  5. Step 5: Solve for x
    x = 1,909.32/43.14
  6. Step 6: Final answer
    x = 44.26

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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.