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Finding the Fourth Proportional to 755.49, 1,042.32 and 460.65

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Solution

The fourth proportional to 755.49, 1,042.32 and 460.65 is: 635.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    755.49 : 1,042.32 = 460.65 : x
  2. Step 2: Convert to fraction form
    755.49/1,042.32 = 460.65/x
  3. Step 3: Cross multiply
    755.49x = 1,042.32 × 460.65
  4. Step 4: Simplify right side
    755.49x = 480,144.71
  5. Step 5: Solve for x
    x = 480,144.71/755.49
  6. Step 6: Final answer
    x = 635.54

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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.