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Finding the Fourth Proportional to 928.33, 1,279.43 and 762.01

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Solution

The fourth proportional to 928.33, 1,279.43 and 762.01 is: 1,050.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    928.33 : 1,279.43 = 762.01 : x
  2. Step 2: Convert to fraction form
    928.33/1,279.43 = 762.01/x
  3. Step 3: Cross multiply
    928.33x = 1,279.43 × 762.01
  4. Step 4: Simplify right side
    928.33x = 974,934.30
  5. Step 5: Solve for x
    x = 974,934.30/928.33
  6. Step 6: Final answer
    x = 1,050.21

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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.