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Finding the Fourth Proportional to 140.79, 191.59 and 140.10

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Solution

The fourth proportional to 140.79, 191.59 and 140.10 is: 190.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.79 : 191.59 = 140.10 : x
  2. Step 2: Convert to fraction form
    140.79/191.59 = 140.10/x
  3. Step 3: Cross multiply
    140.79x = 191.59 × 140.10
  4. Step 4: Simplify right side
    140.79x = 26,842.70
  5. Step 5: Solve for x
    x = 26,842.70/140.79
  6. Step 6: Final answer
    x = 190.66

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.