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Finding the Fourth Proportional to 170.43, 253.86 and 168.30

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Solution

The fourth proportional to 170.43, 253.86 and 168.30 is: 250.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.43 : 253.86 = 168.30 : x
  2. Step 2: Convert to fraction form
    170.43/253.86 = 168.30/x
  3. Step 3: Cross multiply
    170.43x = 253.86 × 168.30
  4. Step 4: Simplify right side
    170.43x = 42,724.64
  5. Step 5: Solve for x
    x = 42,724.64/170.43
  6. Step 6: Final answer
    x = 250.69

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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.