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Finding the Fourth Proportional to 630.73, 870.27 and 382

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Solution

The fourth proportional to 630.73, 870.27 and 382 is: 527.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.73 : 870.27 = 382 : x
  2. Step 2: Convert to fraction form
    630.73/870.27 = 382/x
  3. Step 3: Cross multiply
    630.73x = 870.27 × 382
  4. Step 4: Simplify right side
    630.73x = 332,443.14
  5. Step 5: Solve for x
    x = 332,443.14/630.73
  6. Step 6: Final answer
    x = 527.08

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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.