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Finding the Fourth Proportional to 161.01, 240.35 and 140.50

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Solution

The fourth proportional to 161.01, 240.35 and 140.50 is: 209.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.01 : 240.35 = 140.50 : x
  2. Step 2: Convert to fraction form
    161.01/240.35 = 140.50/x
  3. Step 3: Cross multiply
    161.01x = 240.35 × 140.50
  4. Step 4: Simplify right side
    161.01x = 33,769.18
  5. Step 5: Solve for x
    x = 33,769.18/161.01
  6. Step 6: Final answer
    x = 209.73

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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.