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Finding the Fourth Proportional to 151.02, 207.18 and 141.70

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Solution

The fourth proportional to 151.02, 207.18 and 141.70 is: 194.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.02 : 207.18 = 141.70 : x
  2. Step 2: Convert to fraction form
    151.02/207.18 = 141.70/x
  3. Step 3: Cross multiply
    151.02x = 207.18 × 141.70
  4. Step 4: Simplify right side
    151.02x = 29,357.41
  5. Step 5: Solve for x
    x = 29,357.41/151.02
  6. Step 6: Final answer
    x = 194.39

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.