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Finding the Fourth Proportional to 800.66, 1,105.04 and 469.10

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Solution

The fourth proportional to 800.66, 1,105.04 and 469.10 is: 647.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    800.66 : 1,105.04 = 469.10 : x
  2. Step 2: Convert to fraction form
    800.66/1,105.04 = 469.10/x
  3. Step 3: Cross multiply
    800.66x = 1,105.04 × 469.10
  4. Step 4: Simplify right side
    800.66x = 518,378.20
  5. Step 5: Solve for x
    x = 518,378.20/800.66
  6. Step 6: Final answer
    x = 647.44

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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.