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Finding the Fourth Proportional to 161.36, 240.90 and 151.58

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Solution

The fourth proportional to 161.36, 240.90 and 151.58 is: 226.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.36 : 240.90 = 151.58 : x
  2. Step 2: Convert to fraction form
    161.36/240.90 = 151.58/x
  3. Step 3: Cross multiply
    161.36x = 240.90 × 151.58
  4. Step 4: Simplify right side
    161.36x = 36,515.62
  5. Step 5: Solve for x
    x = 36,515.62/161.36
  6. Step 6: Final answer
    x = 226.30

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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.