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Finding the Fourth Proportional to 755.04, 1,040.73 and 622.02

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Solution

The fourth proportional to 755.04, 1,040.73 and 622.02 is: 857.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    755.04 : 1,040.73 = 622.02 : x
  2. Step 2: Convert to fraction form
    755.04/1,040.73 = 622.02/x
  3. Step 3: Cross multiply
    755.04x = 1,040.73 × 622.02
  4. Step 4: Simplify right side
    755.04x = 647,354.87
  5. Step 5: Solve for x
    x = 647,354.87/755.04
  6. Step 6: Final answer
    x = 857.38

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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.