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Finding the Fourth Proportional to 801.63, 1,105.88 and 469.94

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Solution

The fourth proportional to 801.63, 1,105.88 and 469.94 is: 648.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.63 : 1,105.88 = 469.94 : x
  2. Step 2: Convert to fraction form
    801.63/1,105.88 = 469.94/x
  3. Step 3: Cross multiply
    801.63x = 1,105.88 × 469.94
  4. Step 4: Simplify right side
    801.63x = 519,689.37
  5. Step 5: Solve for x
    x = 519,689.37/801.63
  6. Step 6: Final answer
    x = 648.29

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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.