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Finding the Fourth Proportional to 801.77, 1,106.52 and 447.75

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Solution

The fourth proportional to 801.77, 1,106.52 and 447.75 is: 617.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.77 : 1,106.52 = 447.75 : x
  2. Step 2: Convert to fraction form
    801.77/1,106.52 = 447.75/x
  3. Step 3: Cross multiply
    801.77x = 1,106.52 × 447.75
  4. Step 4: Simplify right side
    801.77x = 495,444.33
  5. Step 5: Solve for x
    x = 495,444.33/801.77
  6. Step 6: Final answer
    x = 617.94

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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.