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Finding the Fourth Proportional to 627.62, 935.91 and 613.67

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Solution

The fourth proportional to 627.62, 935.91 and 613.67 is: 915.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.62 : 935.91 = 613.67 : x
  2. Step 2: Convert to fraction form
    627.62/935.91 = 613.67/x
  3. Step 3: Cross multiply
    627.62x = 935.91 × 613.67
  4. Step 4: Simplify right side
    627.62x = 574,335.21
  5. Step 5: Solve for x
    x = 574,335.21/627.62
  6. Step 6: Final answer
    x = 915.11

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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.