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Finding the Fourth Proportional to 307.35, 424.15 and 167.48

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Solution

The fourth proportional to 307.35, 424.15 and 167.48 is: 231.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.35 : 424.15 = 167.48 : x
  2. Step 2: Convert to fraction form
    307.35/424.15 = 167.48/x
  3. Step 3: Cross multiply
    307.35x = 424.15 × 167.48
  4. Step 4: Simplify right side
    307.35x = 71,034.10
  5. Step 5: Solve for x
    x = 71,034.10/307.35
  6. Step 6: Final answer
    x = 231.12

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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.