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Finding the Fourth Proportional to 354.46, 528.28 and 353.92

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Solution

The fourth proportional to 354.46, 528.28 and 353.92 is: 527.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.46 : 528.28 = 353.92 : x
  2. Step 2: Convert to fraction form
    354.46/528.28 = 353.92/x
  3. Step 3: Cross multiply
    354.46x = 528.28 × 353.92
  4. Step 4: Simplify right side
    354.46x = 186,968.86
  5. Step 5: Solve for x
    x = 186,968.86/354.46
  6. Step 6: Final answer
    x = 527.48

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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.