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Finding the Fourth Proportional to 472.24, 707.04 and 255.04

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Solution

The fourth proportional to 472.24, 707.04 and 255.04 is: 381.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.24 : 707.04 = 255.04 : x
  2. Step 2: Convert to fraction form
    472.24/707.04 = 255.04/x
  3. Step 3: Cross multiply
    472.24x = 707.04 × 255.04
  4. Step 4: Simplify right side
    472.24x = 180,323.48
  5. Step 5: Solve for x
    x = 180,323.48/472.24
  6. Step 6: Final answer
    x = 381.85

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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.