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Finding the Fourth Proportional to 907.38, 1,250.78 and 832.05

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Solution

The fourth proportional to 907.38, 1,250.78 and 832.05 is: 1,146.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.38 : 1,250.78 = 832.05 : x
  2. Step 2: Convert to fraction form
    907.38/1,250.78 = 832.05/x
  3. Step 3: Cross multiply
    907.38x = 1,250.78 × 832.05
  4. Step 4: Simplify right side
    907.38x = 1,040,707.34
  5. Step 5: Solve for x
    x = 1,040,707.34/907.38
  6. Step 6: Final answer
    x = 1,146.94

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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.