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Finding the Fourth Proportional to 146.29, 218.38 and 127.15

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Solution

The fourth proportional to 146.29, 218.38 and 127.15 is: 189.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.29 : 218.38 = 127.15 : x
  2. Step 2: Convert to fraction form
    146.29/218.38 = 127.15/x
  3. Step 3: Cross multiply
    146.29x = 218.38 × 127.15
  4. Step 4: Simplify right side
    146.29x = 27,767.02
  5. Step 5: Solve for x
    x = 27,767.02/146.29
  6. Step 6: Final answer
    x = 189.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.