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Finding the Fourth Proportional to 863.29, 1,293.99 and 400.93

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Solution

The fourth proportional to 863.29, 1,293.99 and 400.93 is: 600.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    863.29 : 1,293.99 = 400.93 : x
  2. Step 2: Convert to fraction form
    863.29/1,293.99 = 400.93/x
  3. Step 3: Cross multiply
    863.29x = 1,293.99 × 400.93
  4. Step 4: Simplify right side
    863.29x = 518,799.41
  5. Step 5: Solve for x
    x = 518,799.41/863.29
  6. Step 6: Final answer
    x = 600.96

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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.