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Finding the Fourth Proportional to 671.22, 925.40 and 484.13

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Solution

The fourth proportional to 671.22, 925.40 and 484.13 is: 667.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.22 : 925.40 = 484.13 : x
  2. Step 2: Convert to fraction form
    671.22/925.40 = 484.13/x
  3. Step 3: Cross multiply
    671.22x = 925.40 × 484.13
  4. Step 4: Simplify right side
    671.22x = 448,017.43
  5. Step 5: Solve for x
    x = 448,017.43/671.22
  6. Step 6: Final answer
    x = 667.47

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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.