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Finding the Fourth Proportional to 151.18, 208.56 and 116.22

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Solution

The fourth proportional to 151.18, 208.56 and 116.22 is: 160.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.18 : 208.56 = 116.22 : x
  2. Step 2: Convert to fraction form
    151.18/208.56 = 116.22/x
  3. Step 3: Cross multiply
    151.18x = 208.56 × 116.22
  4. Step 4: Simplify right side
    151.18x = 24,238.84
  5. Step 5: Solve for x
    x = 24,238.84/151.18
  6. Step 6: Final answer
    x = 160.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.