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Finding the Fourth Proportional to 508.52, 762.77 and 439.84

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Solution

The fourth proportional to 508.52, 762.77 and 439.84 is: 659.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.52 : 762.77 = 439.84 : x
  2. Step 2: Convert to fraction form
    508.52/762.77 = 439.84/x
  3. Step 3: Cross multiply
    508.52x = 762.77 × 439.84
  4. Step 4: Simplify right side
    508.52x = 335,496.76
  5. Step 5: Solve for x
    x = 335,496.76/508.52
  6. Step 6: Final answer
    x = 659.75

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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.