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Finding the Fourth Proportional to 627.04, 872.23 and 615.16

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Solution

The fourth proportional to 627.04, 872.23 and 615.16 is: 855.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.04 : 872.23 = 615.16 : x
  2. Step 2: Convert to fraction form
    627.04/872.23 = 615.16/x
  3. Step 3: Cross multiply
    627.04x = 872.23 × 615.16
  4. Step 4: Simplify right side
    627.04x = 536,561.01
  5. Step 5: Solve for x
    x = 536,561.01/627.04
  6. Step 6: Final answer
    x = 855.70

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.