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Finding the Fourth Proportional to 151.52, 226.08 and 140

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Solution

The fourth proportional to 151.52, 226.08 and 140 is: 208.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.52 : 226.08 = 140 : x
  2. Step 2: Convert to fraction form
    151.52/226.08 = 140/x
  3. Step 3: Cross multiply
    151.52x = 226.08 × 140
  4. Step 4: Simplify right side
    151.52x = 31,651.20
  5. Step 5: Solve for x
    x = 31,651.20/151.52
  6. Step 6: Final answer
    x = 208.89

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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.