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Finding the Fourth Proportional to 849.10, 1,170.03 and 627.70

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Solution

The fourth proportional to 849.10, 1,170.03 and 627.70 is: 864.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    849.10 : 1,170.03 = 627.70 : x
  2. Step 2: Convert to fraction form
    849.10/1,170.03 = 627.70/x
  3. Step 3: Cross multiply
    849.10x = 1,170.03 × 627.70
  4. Step 4: Simplify right side
    849.10x = 734,427.83
  5. Step 5: Solve for x
    x = 734,427.83/849.10
  6. Step 6: Final answer
    x = 864.95

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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.