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Finding the Fourth Proportional to 43.76, 60.36 and 42.88

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Solution

The fourth proportional to 43.76, 60.36 and 42.88 is: 59.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.76 : 60.36 = 42.88 : x
  2. Step 2: Convert to fraction form
    43.76/60.36 = 42.88/x
  3. Step 3: Cross multiply
    43.76x = 60.36 × 42.88
  4. Step 4: Simplify right side
    43.76x = 2,588.24
  5. Step 5: Solve for x
    x = 2,588.24/43.76
  6. Step 6: Final answer
    x = 59.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.