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Finding the Fourth Proportional to 151.14, 208.37 and 101.25

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Solution

The fourth proportional to 151.14, 208.37 and 101.25 is: 139.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.14 : 208.37 = 101.25 : x
  2. Step 2: Convert to fraction form
    151.14/208.37 = 101.25/x
  3. Step 3: Cross multiply
    151.14x = 208.37 × 101.25
  4. Step 4: Simplify right side
    151.14x = 21,097.46
  5. Step 5: Solve for x
    x = 21,097.46/151.14
  6. Step 6: Final answer
    x = 139.59

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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.