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Finding the Fourth Proportional to 659.13, 909.52 and 379.37

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Solution

The fourth proportional to 659.13, 909.52 and 379.37 is: 523.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    659.13 : 909.52 = 379.37 : x
  2. Step 2: Convert to fraction form
    659.13/909.52 = 379.37/x
  3. Step 3: Cross multiply
    659.13x = 909.52 × 379.37
  4. Step 4: Simplify right side
    659.13x = 345,044.60
  5. Step 5: Solve for x
    x = 345,044.60/659.13
  6. Step 6: Final answer
    x = 523.48

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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.