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Finding the Fourth Proportional to 759.38, 1,048.28 and 460.76

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Solution

The fourth proportional to 759.38, 1,048.28 and 460.76 is: 636.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    759.38 : 1,048.28 = 460.76 : x
  2. Step 2: Convert to fraction form
    759.38/1,048.28 = 460.76/x
  3. Step 3: Cross multiply
    759.38x = 1,048.28 × 460.76
  4. Step 4: Simplify right side
    759.38x = 482,997.95
  5. Step 5: Solve for x
    x = 482,997.95/759.38
  6. Step 6: Final answer
    x = 636.05

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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.