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Finding the Fourth Proportional to 755.04, 1,042.19 and 440.38

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Solution

The fourth proportional to 755.04, 1,042.19 and 440.38 is: 607.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    755.04 : 1,042.19 = 440.38 : x
  2. Step 2: Convert to fraction form
    755.04/1,042.19 = 440.38/x
  3. Step 3: Cross multiply
    755.04x = 1,042.19 × 440.38
  4. Step 4: Simplify right side
    755.04x = 458,959.63
  5. Step 5: Solve for x
    x = 458,959.63/755.04
  6. Step 6: Final answer
    x = 607.86

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Double scale
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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.