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Finding the Fourth Proportional to 307.19, 423.92 and 169.19

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Solution

The fourth proportional to 307.19, 423.92 and 169.19 is: 233.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.19 : 423.92 = 169.19 : x
  2. Step 2: Convert to fraction form
    307.19/423.92 = 169.19/x
  3. Step 3: Cross multiply
    307.19x = 423.92 × 169.19
  4. Step 4: Simplify right side
    307.19x = 71,723.02
  5. Step 5: Solve for x
    x = 71,723.02/307.19
  6. Step 6: Final answer
    x = 233.48

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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.