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Finding the Fourth Proportional to 1,158.88, 1,599.19 and 634.90

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Solution

The fourth proportional to 1,158.88, 1,599.19 and 634.90 is: 876.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,158.88 : 1,599.19 = 634.90 : x
  2. Step 2: Convert to fraction form
    1,158.88/1,599.19 = 634.90/x
  3. Step 3: Cross multiply
    1,158.88x = 1,599.19 × 634.90
  4. Step 4: Simplify right side
    1,158.88x = 1,015,325.73
  5. Step 5: Solve for x
    x = 1,015,325.73/1,158.88
  6. Step 6: Final answer
    x = 876.13

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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.