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Finding the Fourth Proportional to 750.25, 1,125.22 and 230.11

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Solution

The fourth proportional to 750.25, 1,125.22 and 230.11 is: 345.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.25 : 1,125.22 = 230.11 : x
  2. Step 2: Convert to fraction form
    750.25/1,125.22 = 230.11/x
  3. Step 3: Cross multiply
    750.25x = 1,125.22 × 230.11
  4. Step 4: Simplify right side
    750.25x = 258,918.75
  5. Step 5: Solve for x
    x = 258,918.75/750.25
  6. Step 6: Final answer
    x = 345.11

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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.