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Finding the Fourth Proportional to 630.97, 870.88 and 382.43

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Solution

The fourth proportional to 630.97, 870.88 and 382.43 is: 527.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.97 : 870.88 = 382.43 : x
  2. Step 2: Convert to fraction form
    630.97/870.88 = 382.43/x
  3. Step 3: Cross multiply
    630.97x = 870.88 × 382.43
  4. Step 4: Simplify right side
    630.97x = 333,050.64
  5. Step 5: Solve for x
    x = 333,050.64/630.97
  6. Step 6: Final answer
    x = 527.84

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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.