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Finding the Fourth Proportional to 757.50, 1,136.17 and 270.51

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Solution

The fourth proportional to 757.50, 1,136.17 and 270.51 is: 405.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    757.50 : 1,136.17 = 270.51 : x
  2. Step 2: Convert to fraction form
    757.50/1,136.17 = 270.51/x
  3. Step 3: Cross multiply
    757.50x = 1,136.17 × 270.51
  4. Step 4: Simplify right side
    757.50x = 307,345.35
  5. Step 5: Solve for x
    x = 307,345.35/757.50
  6. Step 6: Final answer
    x = 405.74

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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.