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Finding the Fourth Proportional to 143.52, 213.47 and 130.53

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Solution

The fourth proportional to 143.52, 213.47 and 130.53 is: 194.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    143.52 : 213.47 = 130.53 : x
  2. Step 2: Convert to fraction form
    143.52/213.47 = 130.53/x
  3. Step 3: Cross multiply
    143.52x = 213.47 × 130.53
  4. Step 4: Simplify right side
    143.52x = 27,863.59
  5. Step 5: Solve for x
    x = 27,863.59/143.52
  6. Step 6: Final answer
    x = 194.14

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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.