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Finding the Fourth Proportional to 624.65, 862.26 and 559.04

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Solution

The fourth proportional to 624.65, 862.26 and 559.04 is: 771.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.65 : 862.26 = 559.04 : x
  2. Step 2: Convert to fraction form
    624.65/862.26 = 559.04/x
  3. Step 3: Cross multiply
    624.65x = 862.26 × 559.04
  4. Step 4: Simplify right side
    624.65x = 482,037.83
  5. Step 5: Solve for x
    x = 482,037.83/624.65
  6. Step 6: Final answer
    x = 771.69

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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.