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Finding the Fourth Proportional to 561.80, 843.04 and 446.65

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Solution

The fourth proportional to 561.80, 843.04 and 446.65 is: 670.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.80 : 843.04 = 446.65 : x
  2. Step 2: Convert to fraction form
    561.80/843.04 = 446.65/x
  3. Step 3: Cross multiply
    561.80x = 843.04 × 446.65
  4. Step 4: Simplify right side
    561.80x = 376,542.27
  5. Step 5: Solve for x
    x = 376,542.27/561.80
  6. Step 6: Final answer
    x = 670.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.