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Finding the Fourth Proportional to 801.04, 1,105.33 and 486.37

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Solution

The fourth proportional to 801.04, 1,105.33 and 486.37 is: 671.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.04 : 1,105.33 = 486.37 : x
  2. Step 2: Convert to fraction form
    801.04/1,105.33 = 486.37/x
  3. Step 3: Cross multiply
    801.04x = 1,105.33 × 486.37
  4. Step 4: Simplify right side
    801.04x = 537,600.43
  5. Step 5: Solve for x
    x = 537,600.43/801.04
  6. Step 6: Final answer
    x = 671.13

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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.