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Finding the Fourth Proportional to 354.28, 528.32 and 351.04

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Solution

The fourth proportional to 354.28, 528.32 and 351.04 is: 523.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.28 : 528.32 = 351.04 : x
  2. Step 2: Convert to fraction form
    354.28/528.32 = 351.04/x
  3. Step 3: Cross multiply
    354.28x = 528.32 × 351.04
  4. Step 4: Simplify right side
    354.28x = 185,461.45
  5. Step 5: Solve for x
    x = 185,461.45/354.28
  6. Step 6: Final answer
    x = 523.49

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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.