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Finding the Fourth Proportional to 757.93, 1,136.76 and 347.08

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Solution

The fourth proportional to 757.93, 1,136.76 and 347.08 is: 520.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    757.93 : 1,136.76 = 347.08 : x
  2. Step 2: Convert to fraction form
    757.93/1,136.76 = 347.08/x
  3. Step 3: Cross multiply
    757.93x = 1,136.76 × 347.08
  4. Step 4: Simplify right side
    757.93x = 394,546.66
  5. Step 5: Solve for x
    x = 394,546.66/757.93
  6. Step 6: Final answer
    x = 520.56

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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.