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Finding the Fourth Proportional to 634.56, 874.80 and 535.92

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Solution

The fourth proportional to 634.56, 874.80 and 535.92 is: 738.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.56 : 874.80 = 535.92 : x
  2. Step 2: Convert to fraction form
    634.56/874.80 = 535.92/x
  3. Step 3: Cross multiply
    634.56x = 874.80 × 535.92
  4. Step 4: Simplify right side
    634.56x = 468,822.82
  5. Step 5: Solve for x
    x = 468,822.82/634.56
  6. Step 6: Final answer
    x = 738.82

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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.