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Finding the Fourth Proportional to 357.28, 532.79 and 354.04

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Solution

The fourth proportional to 357.28, 532.79 and 354.04 is: 527.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.28 : 532.79 = 354.04 : x
  2. Step 2: Convert to fraction form
    357.28/532.79 = 354.04/x
  3. Step 3: Cross multiply
    357.28x = 532.79 × 354.04
  4. Step 4: Simplify right side
    357.28x = 188,628.97
  5. Step 5: Solve for x
    x = 188,628.97/357.28
  6. Step 6: Final answer
    x = 527.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.