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Finding the Fourth Proportional to 274.05, 410.18 and 171.43

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Solution

The fourth proportional to 274.05, 410.18 and 171.43 is: 256.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.05 : 410.18 = 171.43 : x
  2. Step 2: Convert to fraction form
    274.05/410.18 = 171.43/x
  3. Step 3: Cross multiply
    274.05x = 410.18 × 171.43
  4. Step 4: Simplify right side
    274.05x = 70,317.16
  5. Step 5: Solve for x
    x = 70,317.16/274.05
  6. Step 6: Final answer
    x = 256.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.