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Finding the Fourth Proportional to 862.31, 1,293.73 and 497.36

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Solution

The fourth proportional to 862.31, 1,293.73 and 497.36 is: 746.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    862.31 : 1,293.73 = 497.36 : x
  2. Step 2: Convert to fraction form
    862.31/1,293.73 = 497.36/x
  3. Step 3: Cross multiply
    862.31x = 1,293.73 × 497.36
  4. Step 4: Simplify right side
    862.31x = 643,450.30
  5. Step 5: Solve for x
    x = 643,450.30/862.31
  6. Step 6: Final answer
    x = 746.19

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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.