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Finding the Fourth Proportional to 913.74, 1,375.67 and 627.06

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Solution

The fourth proportional to 913.74, 1,375.67 and 627.06 is: 944.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    913.74 : 1,375.67 = 627.06 : x
  2. Step 2: Convert to fraction form
    913.74/1,375.67 = 627.06/x
  3. Step 3: Cross multiply
    913.74x = 1,375.67 × 627.06
  4. Step 4: Simplify right side
    913.74x = 862,624.49
  5. Step 5: Solve for x
    x = 862,624.49/913.74
  6. Step 6: Final answer
    x = 944.06

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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.