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Finding the Fourth Proportional to 307.88, 424.87 and 169.88

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Solution

The fourth proportional to 307.88, 424.87 and 169.88 is: 234.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.88 : 424.87 = 169.88 : x
  2. Step 2: Convert to fraction form
    307.88/424.87 = 169.88/x
  3. Step 3: Cross multiply
    307.88x = 424.87 × 169.88
  4. Step 4: Simplify right side
    307.88x = 72,174.79
  5. Step 5: Solve for x
    x = 72,174.79/307.88
  6. Step 6: Final answer
    x = 234.43

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