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Finding the Fourth Proportional to 798.98, 1,102.38 and 483.99

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Solution

The fourth proportional to 798.98, 1,102.38 and 483.99 is: 667.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    798.98 : 1,102.38 = 483.99 : x
  2. Step 2: Convert to fraction form
    798.98/1,102.38 = 483.99/x
  3. Step 3: Cross multiply
    798.98x = 1,102.38 × 483.99
  4. Step 4: Simplify right side
    798.98x = 533,540.90
  5. Step 5: Solve for x
    x = 533,540.90/798.98
  6. Step 6: Final answer
    x = 667.78

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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.