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Finding the Fourth Proportional to 863.74, 1,192.38 and 532.24

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Solution

The fourth proportional to 863.74, 1,192.38 and 532.24 is: 734.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    863.74 : 1,192.38 = 532.24 : x
  2. Step 2: Convert to fraction form
    863.74/1,192.38 = 532.24/x
  3. Step 3: Cross multiply
    863.74x = 1,192.38 × 532.24
  4. Step 4: Simplify right side
    863.74x = 634,632.33
  5. Step 5: Solve for x
    x = 634,632.33/863.74
  6. Step 6: Final answer
    x = 734.75

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1.5x scale

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.