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Finding the Fourth Proportional to 773.32, 1,067.20 and 507.59

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Solution

The fourth proportional to 773.32, 1,067.20 and 507.59 is: 700.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.32 : 1,067.20 = 507.59 : x
  2. Step 2: Convert to fraction form
    773.32/1,067.20 = 507.59/x
  3. Step 3: Cross multiply
    773.32x = 1,067.20 × 507.59
  4. Step 4: Simplify right side
    773.32x = 541,701.87
  5. Step 5: Solve for x
    x = 541,701.87/773.32
  6. Step 6: Final answer
    x = 700.49

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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.