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Finding the Fourth Proportional to 411.48, 568.40 and 382.32

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Solution

The fourth proportional to 411.48, 568.40 and 382.32 is: 528.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.48 : 568.40 = 382.32 : x
  2. Step 2: Convert to fraction form
    411.48/568.40 = 382.32/x
  3. Step 3: Cross multiply
    411.48x = 568.40 × 382.32
  4. Step 4: Simplify right side
    411.48x = 217,308.78
  5. Step 5: Solve for x
    x = 217,308.78/411.48
  6. Step 6: Final answer
    x = 528.12

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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.