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Finding the Fourth Proportional to 151.58, 209.13 and 93.35

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Solution

The fourth proportional to 151.58, 209.13 and 93.35 is: 128.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.58 : 209.13 = 93.35 : x
  2. Step 2: Convert to fraction form
    151.58/209.13 = 93.35/x
  3. Step 3: Cross multiply
    151.58x = 209.13 × 93.35
  4. Step 4: Simplify right side
    151.58x = 19,522.29
  5. Step 5: Solve for x
    x = 19,522.29/151.58
  6. Step 6: Final answer
    x = 128.79

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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.