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Finding the Fourth Proportional to 140.35, 209.36 and 134.59

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Solution

The fourth proportional to 140.35, 209.36 and 134.59 is: 200.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.35 : 209.36 = 134.59 : x
  2. Step 2: Convert to fraction form
    140.35/209.36 = 134.59/x
  3. Step 3: Cross multiply
    140.35x = 209.36 × 134.59
  4. Step 4: Simplify right side
    140.35x = 28,177.76
  5. Step 5: Solve for x
    x = 28,177.76/140.35
  6. Step 6: Final answer
    x = 200.77

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.