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Finding the Fourth Proportional to 382.24, 525.47 and 328.88

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Solution

The fourth proportional to 382.24, 525.47 and 328.88 is: 452.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.24 : 525.47 = 328.88 : x
  2. Step 2: Convert to fraction form
    382.24/525.47 = 328.88/x
  3. Step 3: Cross multiply
    382.24x = 525.47 × 328.88
  4. Step 4: Simplify right side
    382.24x = 172,812.30
  5. Step 5: Solve for x
    x = 172,812.30/382.24
  6. Step 6: Final answer
    x = 452.10

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.