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Finding the Fourth Proportional to 169.72, 253.59 and 148.88

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Solution

The fourth proportional to 169.72, 253.59 and 148.88 is: 222.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.72 : 253.59 = 148.88 : x
  2. Step 2: Convert to fraction form
    169.72/253.59 = 148.88/x
  3. Step 3: Cross multiply
    169.72x = 253.59 × 148.88
  4. Step 4: Simplify right side
    169.72x = 37,753.73
  5. Step 5: Solve for x
    x = 37,753.73/169.72
  6. Step 6: Final answer
    x = 222.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.