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Finding the Fourth Proportional to 191.74, 265.17 and 168.40

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Solution

The fourth proportional to 191.74, 265.17 and 168.40 is: 232.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.74 : 265.17 = 168.40 : x
  2. Step 2: Convert to fraction form
    191.74/265.17 = 168.40/x
  3. Step 3: Cross multiply
    191.74x = 265.17 × 168.40
  4. Step 4: Simplify right side
    191.74x = 44,654.63
  5. Step 5: Solve for x
    x = 44,654.63/191.74
  6. Step 6: Final answer
    x = 232.89

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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.