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Finding the Fourth Proportional to 1,024.84, 1,414.32 and 631.92

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Solution

The fourth proportional to 1,024.84, 1,414.32 and 631.92 is: 872.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,024.84 : 1,414.32 = 631.92 : x
  2. Step 2: Convert to fraction form
    1,024.84/1,414.32 = 631.92/x
  3. Step 3: Cross multiply
    1,024.84x = 1,414.32 × 631.92
  4. Step 4: Simplify right side
    1,024.84x = 893,737.09
  5. Step 5: Solve for x
    x = 893,737.09/1,024.84
  6. Step 6: Final answer
    x = 872.07

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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.