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Finding the Fourth Proportional to 671.27, 1,010.63 and 613.87

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Solution

The fourth proportional to 671.27, 1,010.63 and 613.87 is: 924.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.27 : 1,010.63 = 613.87 : x
  2. Step 2: Convert to fraction form
    671.27/1,010.63 = 613.87/x
  3. Step 3: Cross multiply
    671.27x = 1,010.63 × 613.87
  4. Step 4: Simplify right side
    671.27x = 620,395.44
  5. Step 5: Solve for x
    x = 620,395.44/671.27
  6. Step 6: Final answer
    x = 924.21

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.