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Finding the Fourth Proportional to 836.71, 1,252.71 and 630.63

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Solution

The fourth proportional to 836.71, 1,252.71 and 630.63 is: 944.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.71 : 1,252.71 = 630.63 : x
  2. Step 2: Convert to fraction form
    836.71/1,252.71 = 630.63/x
  3. Step 3: Cross multiply
    836.71x = 1,252.71 × 630.63
  4. Step 4: Simplify right side
    836.71x = 789,996.51
  5. Step 5: Solve for x
    x = 789,996.51/836.71
  6. Step 6: Final answer
    x = 944.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.