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Finding the Fourth Proportional to 161.19, 240.03 and 157.32

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Solution

The fourth proportional to 161.19, 240.03 and 157.32 is: 234.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.19 : 240.03 = 157.32 : x
  2. Step 2: Convert to fraction form
    161.19/240.03 = 157.32/x
  3. Step 3: Cross multiply
    161.19x = 240.03 × 157.32
  4. Step 4: Simplify right side
    161.19x = 37,761.52
  5. Step 5: Solve for x
    x = 37,761.52/161.19
  6. Step 6: Final answer
    x = 234.27

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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.