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Finding the Fourth Proportional to 862.71, 1,292.63 and 733.11

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Solution

The fourth proportional to 862.71, 1,292.63 and 733.11 is: 1,098.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    862.71 : 1,292.63 = 733.11 : x
  2. Step 2: Convert to fraction form
    862.71/1,292.63 = 733.11/x
  3. Step 3: Cross multiply
    862.71x = 1,292.63 × 733.11
  4. Step 4: Simplify right side
    862.71x = 947,636.31
  5. Step 5: Solve for x
    x = 947,636.31/862.71
  6. Step 6: Final answer
    x = 1,098.44

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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.