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Finding the Fourth Proportional to 158.48, 218.32 and 151.73

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Solution

The fourth proportional to 158.48, 218.32 and 151.73 is: 209.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.48 : 218.32 = 151.73 : x
  2. Step 2: Convert to fraction form
    158.48/218.32 = 151.73/x
  3. Step 3: Cross multiply
    158.48x = 218.32 × 151.73
  4. Step 4: Simplify right side
    158.48x = 33,124.22
  5. Step 5: Solve for x
    x = 33,124.22/158.48
  6. Step 6: Final answer
    x = 209.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.