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Finding the Fourth Proportional to 798.59, 1,102.60 and 499.96

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Solution

The fourth proportional to 798.59, 1,102.60 and 499.96 is: 690.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    798.59 : 1,102.60 = 499.96 : x
  2. Step 2: Convert to fraction form
    798.59/1,102.60 = 499.96/x
  3. Step 3: Cross multiply
    798.59x = 1,102.60 × 499.96
  4. Step 4: Simplify right side
    798.59x = 551,248.88
  5. Step 5: Solve for x
    x = 551,248.88/798.59
  6. Step 6: Final answer
    x = 690.28

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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.