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Finding the Fourth Proportional to 862.33, 1,293.77 and 554.53

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Solution

The fourth proportional to 862.33, 1,293.77 and 554.53 is: 831.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    862.33 : 1,293.77 = 554.53 : x
  2. Step 2: Convert to fraction form
    862.33/1,293.77 = 554.53/x
  3. Step 3: Cross multiply
    862.33x = 1,293.77 × 554.53
  4. Step 4: Simplify right side
    862.33x = 717,434.16
  5. Step 5: Solve for x
    x = 717,434.16/862.33
  6. Step 6: Final answer
    x = 831.97

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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.