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Finding the Fourth Proportional to 151.05, 208.18 and 124.67

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Solution

The fourth proportional to 151.05, 208.18 and 124.67 is: 171.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.05 : 208.18 = 124.67 : x
  2. Step 2: Convert to fraction form
    151.05/208.18 = 124.67/x
  3. Step 3: Cross multiply
    151.05x = 208.18 × 124.67
  4. Step 4: Simplify right side
    151.05x = 25,953.49
  5. Step 5: Solve for x
    x = 25,953.49/151.05
  6. Step 6: Final answer
    x = 171.82

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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.