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Finding the Fourth Proportional to 159.52, 221.06 and 157.57

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Solution

The fourth proportional to 159.52, 221.06 and 157.57 is: 218.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.52 : 221.06 = 157.57 : x
  2. Step 2: Convert to fraction form
    159.52/221.06 = 157.57/x
  3. Step 3: Cross multiply
    159.52x = 221.06 × 157.57
  4. Step 4: Simplify right side
    159.52x = 34,832.42
  5. Step 5: Solve for x
    x = 34,832.42/159.52
  6. Step 6: Final answer
    x = 218.36

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.