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Finding the Fourth Proportional to 627.66, 935.51 and 613.08

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Solution

The fourth proportional to 627.66, 935.51 and 613.08 is: 913.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.66 : 935.51 = 613.08 : x
  2. Step 2: Convert to fraction form
    627.66/935.51 = 613.08/x
  3. Step 3: Cross multiply
    627.66x = 935.51 × 613.08
  4. Step 4: Simplify right side
    627.66x = 573,539.41
  5. Step 5: Solve for x
    x = 573,539.41/627.66
  6. Step 6: Final answer
    x = 913.77

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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.