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Finding the Fourth Proportional to 1,149.65, 1,586.52 and 625.68

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Solution

The fourth proportional to 1,149.65, 1,586.52 and 625.68 is: 863.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149.65 : 1,586.52 = 625.68 : x
  2. Step 2: Convert to fraction form
    1,149.65/1,586.52 = 625.68/x
  3. Step 3: Cross multiply
    1,149.65x = 1,586.52 × 625.68
  4. Step 4: Simplify right side
    1,149.65x = 992,653.83
  5. Step 5: Solve for x
    x = 992,653.83/1,149.65
  6. Step 6: Final answer
    x = 863.44

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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.