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Finding the Fourth Proportional to 641.97, 886.80 and 544.77

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Solution

The fourth proportional to 641.97, 886.80 and 544.77 is: 752.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.97 : 886.80 = 544.77 : x
  2. Step 2: Convert to fraction form
    641.97/886.80 = 544.77/x
  3. Step 3: Cross multiply
    641.97x = 886.80 × 544.77
  4. Step 4: Simplify right side
    641.97x = 483,102.04
  5. Step 5: Solve for x
    x = 483,102.04/641.97
  6. Step 6: Final answer
    x = 752.53

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1.5x scale

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.