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Finding the Fourth Proportional to 159.77, 220.49 and 110.71

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Solution

The fourth proportional to 159.77, 220.49 and 110.71 is: 152.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.77 : 220.49 = 110.71 : x
  2. Step 2: Convert to fraction form
    159.77/220.49 = 110.71/x
  3. Step 3: Cross multiply
    159.77x = 220.49 × 110.71
  4. Step 4: Simplify right side
    159.77x = 24,410.17
  5. Step 5: Solve for x
    x = 24,410.17/159.77
  6. Step 6: Final answer
    x = 152.79

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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.