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Finding the Fourth Proportional to 307.43, 424.28 and 176.44

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Solution

The fourth proportional to 307.43, 424.28 and 176.44 is: 243.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.43 : 424.28 = 176.44 : x
  2. Step 2: Convert to fraction form
    307.43/424.28 = 176.44/x
  3. Step 3: Cross multiply
    307.43x = 424.28 × 176.44
  4. Step 4: Simplify right side
    307.43x = 74,859.34
  5. Step 5: Solve for x
    x = 74,859.34/307.43
  6. Step 6: Final answer
    x = 243.50

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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.