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Finding the Fourth Proportional to 160.80, 220.57 and 151.48

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Solution

The fourth proportional to 160.80, 220.57 and 151.48 is: 207.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.80 : 220.57 = 151.48 : x
  2. Step 2: Convert to fraction form
    160.80/220.57 = 151.48/x
  3. Step 3: Cross multiply
    160.80x = 220.57 × 151.48
  4. Step 4: Simplify right side
    160.80x = 33,412.27
  5. Step 5: Solve for x
    x = 33,412.27/160.80
  6. Step 6: Final answer
    x = 207.79

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.