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Finding the Fourth Proportional to 1,158.98, 1,599.39 and 627.87

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Solution

The fourth proportional to 1,158.98, 1,599.39 and 627.87 is: 866.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,158.98 : 1,599.39 = 627.87 : x
  2. Step 2: Convert to fraction form
    1,158.98/1,599.39 = 627.87/x
  3. Step 3: Cross multiply
    1,158.98x = 1,599.39 × 627.87
  4. Step 4: Simplify right side
    1,158.98x = 1,004,209.35
  5. Step 5: Solve for x
    x = 1,004,209.35/1,158.98
  6. Step 6: Final answer
    x = 866.46

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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.