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Finding the Fourth Proportional to 863.07, 1,292.84 and 584.55

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Solution

The fourth proportional to 863.07, 1,292.84 and 584.55 is: 875.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    863.07 : 1,292.84 = 584.55 : x
  2. Step 2: Convert to fraction form
    863.07/1,292.84 = 584.55/x
  3. Step 3: Cross multiply
    863.07x = 1,292.84 × 584.55
  4. Step 4: Simplify right side
    863.07x = 755,726.70
  5. Step 5: Solve for x
    x = 755,726.70/863.07
  6. Step 6: Final answer
    x = 875.63

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Double scale
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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.