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Finding the Fourth Proportional to 722.10, 994.49 and 671.07

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Solution

The fourth proportional to 722.10, 994.49 and 671.07 is: 924.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.10 : 994.49 = 671.07 : x
  2. Step 2: Convert to fraction form
    722.10/994.49 = 671.07/x
  3. Step 3: Cross multiply
    722.10x = 994.49 × 671.07
  4. Step 4: Simplify right side
    722.10x = 667,372.40
  5. Step 5: Solve for x
    x = 667,372.40/722.10
  6. Step 6: Final answer
    x = 924.21

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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.