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Finding the Fourth Proportional to 159.77, 220.61 and 110.56

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Solution

The fourth proportional to 159.77, 220.61 and 110.56 is: 152.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.77 : 220.61 = 110.56 : x
  2. Step 2: Convert to fraction form
    159.77/220.61 = 110.56/x
  3. Step 3: Cross multiply
    159.77x = 220.61 × 110.56
  4. Step 4: Simplify right side
    159.77x = 24,390.64
  5. Step 5: Solve for x
    x = 24,390.64/159.77
  6. Step 6: Final answer
    x = 152.66

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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.