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Finding the Fourth Proportional to 159.93, 220.76 and 94.49

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Solution

The fourth proportional to 159.93, 220.76 and 94.49 is: 130.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.93 : 220.76 = 94.49 : x
  2. Step 2: Convert to fraction form
    159.93/220.76 = 94.49/x
  3. Step 3: Cross multiply
    159.93x = 220.76 × 94.49
  4. Step 4: Simplify right side
    159.93x = 20,859.61
  5. Step 5: Solve for x
    x = 20,859.61/159.93
  6. Step 6: Final answer
    x = 130.43

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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.