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Finding the Fourth Proportional to 863.55, 1,295.33 and 498.51

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Solution

The fourth proportional to 863.55, 1,295.33 and 498.51 is: 747.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    863.55 : 1,295.33 = 498.51 : x
  2. Step 2: Convert to fraction form
    863.55/1,295.33 = 498.51/x
  3. Step 3: Cross multiply
    863.55x = 1,295.33 × 498.51
  4. Step 4: Simplify right side
    863.55x = 645,732.47
  5. Step 5: Solve for x
    x = 645,732.47/863.55
  6. Step 6: Final answer
    x = 747.77

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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.