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Finding the Fourth Proportional to 637.49, 954.39 and 328.61

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Solution

The fourth proportional to 637.49, 954.39 and 328.61 is: 491.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.49 : 954.39 = 328.61 : x
  2. Step 2: Convert to fraction form
    637.49/954.39 = 328.61/x
  3. Step 3: Cross multiply
    637.49x = 954.39 × 328.61
  4. Step 4: Simplify right side
    637.49x = 313,622.10
  5. Step 5: Solve for x
    x = 313,622.10/637.49
  6. Step 6: Final answer
    x = 491.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.