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Finding the Fourth Proportional to 627.88, 933.80 and 615.56

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Solution

The fourth proportional to 627.88, 933.80 and 615.56 is: 915.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.88 : 933.80 = 615.56 : x
  2. Step 2: Convert to fraction form
    627.88/933.80 = 615.56/x
  3. Step 3: Cross multiply
    627.88x = 933.80 × 615.56
  4. Step 4: Simplify right side
    627.88x = 574,809.93
  5. Step 5: Solve for x
    x = 574,809.93/627.88
  6. Step 6: Final answer
    x = 915.48

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.