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Finding the Fourth Proportional to 803.03, 1,108.25 and 488.22

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Solution

The fourth proportional to 803.03, 1,108.25 and 488.22 is: 673.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    803.03 : 1,108.25 = 488.22 : x
  2. Step 2: Convert to fraction form
    803.03/1,108.25 = 488.22/x
  3. Step 3: Cross multiply
    803.03x = 1,108.25 × 488.22
  4. Step 4: Simplify right side
    803.03x = 541,069.82
  5. Step 5: Solve for x
    x = 541,069.82/803.03
  6. Step 6: Final answer
    x = 673.79

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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.