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Finding the Fourth Proportional to 793.60, 1,095.56 and 499.32

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Solution

The fourth proportional to 793.60, 1,095.56 and 499.32 is: 689.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.60 : 1,095.56 = 499.32 : x
  2. Step 2: Convert to fraction form
    793.60/1,095.56 = 499.32/x
  3. Step 3: Cross multiply
    793.60x = 1,095.56 × 499.32
  4. Step 4: Simplify right side
    793.60x = 547,035.02
  5. Step 5: Solve for x
    x = 547,035.02/793.60
  6. Step 6: Final answer
    x = 689.31

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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.