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Finding the Fourth Proportional to 1,149.82, 1,586.79 and 625.87

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Solution

The fourth proportional to 1,149.82, 1,586.79 and 625.87 is: 863.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149.82 : 1,586.79 = 625.87 : x
  2. Step 2: Convert to fraction form
    1,149.82/1,586.79 = 625.87/x
  3. Step 3: Cross multiply
    1,149.82x = 1,586.79 × 625.87
  4. Step 4: Simplify right side
    1,149.82x = 993,124.26
  5. Step 5: Solve for x
    x = 993,124.26/1,149.82
  6. Step 6: Final answer
    x = 863.72

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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.