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Finding the Fourth Proportional to 1,175.41, 1,621.56 and 677.95

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Solution

The fourth proportional to 1,175.41, 1,621.56 and 677.95 is: 935.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,175.41 : 1,621.56 = 677.95 : x
  2. Step 2: Convert to fraction form
    1,175.41/1,621.56 = 677.95/x
  3. Step 3: Cross multiply
    1,175.41x = 1,621.56 × 677.95
  4. Step 4: Simplify right side
    1,175.41x = 1,099,336.60
  5. Step 5: Solve for x
    x = 1,099,336.60/1,175.41
  6. Step 6: Final answer
    x = 935.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.