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Finding the Fourth Proportional to 297.24, 410.08 and 172.85

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Solution

The fourth proportional to 297.24, 410.08 and 172.85 is: 238.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.24 : 410.08 = 172.85 : x
  2. Step 2: Convert to fraction form
    297.24/410.08 = 172.85/x
  3. Step 3: Cross multiply
    297.24x = 410.08 × 172.85
  4. Step 4: Simplify right side
    297.24x = 70,882.48
  5. Step 5: Solve for x
    x = 70,882.48/297.24
  6. Step 6: Final answer
    x = 238.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.