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Finding the Fourth Proportional to 161.48, 240.51 and 160.74

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Solution

The fourth proportional to 161.48, 240.51 and 160.74 is: 239.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.48 : 240.51 = 160.74 : x
  2. Step 2: Convert to fraction form
    161.48/240.51 = 160.74/x
  3. Step 3: Cross multiply
    161.48x = 240.51 × 160.74
  4. Step 4: Simplify right side
    161.48x = 38,659.58
  5. Step 5: Solve for x
    x = 38,659.58/161.48
  6. Step 6: Final answer
    x = 239.42

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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.