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Finding the Fourth Proportional to 793.54, 1,095.20 and 462.15

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Solution

The fourth proportional to 793.54, 1,095.20 and 462.15 is: 637.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.54 : 1,095.20 = 462.15 : x
  2. Step 2: Convert to fraction form
    793.54/1,095.20 = 462.15/x
  3. Step 3: Cross multiply
    793.54x = 1,095.20 × 462.15
  4. Step 4: Simplify right side
    793.54x = 506,140.26
  5. Step 5: Solve for x
    x = 506,140.26/793.54
  6. Step 6: Final answer
    x = 637.83

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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.