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Finding the Fourth Proportional to 858.43, 1,184.44 and 559.65

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Solution

The fourth proportional to 858.43, 1,184.44 and 559.65 is: 772.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    858.43 : 1,184.44 = 559.65 : x
  2. Step 2: Convert to fraction form
    858.43/1,184.44 = 559.65/x
  3. Step 3: Cross multiply
    858.43x = 1,184.44 × 559.65
  4. Step 4: Simplify right side
    858.43x = 662,871.85
  5. Step 5: Solve for x
    x = 662,871.85/858.43
  6. Step 6: Final answer
    x = 772.19

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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.