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Finding the Fourth Proportional to 907.39, 1,253.38 and 750.65

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Solution

The fourth proportional to 907.39, 1,253.38 and 750.65 is: 1,036.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.39 : 1,253.38 = 750.65 : x
  2. Step 2: Convert to fraction form
    907.39/1,253.38 = 750.65/x
  3. Step 3: Cross multiply
    907.39x = 1,253.38 × 750.65
  4. Step 4: Simplify right side
    907.39x = 940,850.95
  5. Step 5: Solve for x
    x = 940,850.95/907.39
  6. Step 6: Final answer
    x = 1,036.88

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1.5x scale

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.