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Finding the Fourth Proportional to 764.71, 1,147.08 and 506.36

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Solution

The fourth proportional to 764.71, 1,147.08 and 506.36 is: 759.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    764.71 : 1,147.08 = 506.36 : x
  2. Step 2: Convert to fraction form
    764.71/1,147.08 = 506.36/x
  3. Step 3: Cross multiply
    764.71x = 1,147.08 × 506.36
  4. Step 4: Simplify right side
    764.71x = 580,835.43
  5. Step 5: Solve for x
    x = 580,835.43/764.71
  6. Step 6: Final answer
    x = 759.55

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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.