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Finding the Fourth Proportional to 161.29, 240.80 and 158.10

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Solution

The fourth proportional to 161.29, 240.80 and 158.10 is: 236.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.29 : 240.80 = 158.10 : x
  2. Step 2: Convert to fraction form
    161.29/240.80 = 158.10/x
  3. Step 3: Cross multiply
    161.29x = 240.80 × 158.10
  4. Step 4: Simplify right side
    161.29x = 38,070.59
  5. Step 5: Solve for x
    x = 38,070.59/161.29
  6. Step 6: Final answer
    x = 236.04

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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.