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Finding the Fourth Proportional to 170.30, 254.32 and 143.24

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Solution

The fourth proportional to 170.30, 254.32 and 143.24 is: 213.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.30 : 254.32 = 143.24 : x
  2. Step 2: Convert to fraction form
    170.30/254.32 = 143.24/x
  3. Step 3: Cross multiply
    170.30x = 254.32 × 143.24
  4. Step 4: Simplify right side
    170.30x = 36,428.80
  5. Step 5: Solve for x
    x = 36,428.80/170.30
  6. Step 6: Final answer
    x = 213.91

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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.