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Finding the Fourth Proportional to 1,149.76, 1,586.66 and 625.79

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Solution

The fourth proportional to 1,149.76, 1,586.66 and 625.79 is: 863.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149.76 : 1,586.66 = 625.79 : x
  2. Step 2: Convert to fraction form
    1,149.76/1,586.66 = 625.79/x
  3. Step 3: Cross multiply
    1,149.76x = 1,586.66 × 625.79
  4. Step 4: Simplify right side
    1,149.76x = 992,915.96
  5. Step 5: Solve for x
    x = 992,915.96/1,149.76
  6. Step 6: Final answer
    x = 863.59

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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.