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Finding the Fourth Proportional to 793.92, 1,095.68 and 479.34

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Solution

The fourth proportional to 793.92, 1,095.68 and 479.34 is: 661.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.92 : 1,095.68 = 479.34 : x
  2. Step 2: Convert to fraction form
    793.92/1,095.68 = 479.34/x
  3. Step 3: Cross multiply
    793.92x = 1,095.68 × 479.34
  4. Step 4: Simplify right side
    793.92x = 525,203.25
  5. Step 5: Solve for x
    x = 525,203.25/793.92
  6. Step 6: Final answer
    x = 661.53

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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.