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Finding the Fourth Proportional to 151.70, 226.45 and 141.45

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Solution

The fourth proportional to 151.70, 226.45 and 141.45 is: 211.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.70 : 226.45 = 141.45 : x
  2. Step 2: Convert to fraction form
    151.70/226.45 = 141.45/x
  3. Step 3: Cross multiply
    151.70x = 226.45 × 141.45
  4. Step 4: Simplify right side
    151.70x = 32,029.88
  5. Step 5: Solve for x
    x = 32,029.88/151.70
  6. Step 6: Final answer
    x = 211.14

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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.