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Finding the Fourth Proportional to 525.32, 725.22 and 328.89

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Solution

The fourth proportional to 525.32, 725.22 and 328.89 is: 454.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.32 : 725.22 = 328.89 : x
  2. Step 2: Convert to fraction form
    525.32/725.22 = 328.89/x
  3. Step 3: Cross multiply
    525.32x = 725.22 × 328.89
  4. Step 4: Simplify right side
    525.32x = 238,517.61
  5. Step 5: Solve for x
    x = 238,517.61/525.32
  6. Step 6: Final answer
    x = 454.04

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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.