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Finding the Fourth Proportional to 752.41, 1,037.80 and 690.44

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Solution

The fourth proportional to 752.41, 1,037.80 and 690.44 is: 952.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    752.41 : 1,037.80 = 690.44 : x
  2. Step 2: Convert to fraction form
    752.41/1,037.80 = 690.44/x
  3. Step 3: Cross multiply
    752.41x = 1,037.80 × 690.44
  4. Step 4: Simplify right side
    752.41x = 716,535.18
  5. Step 5: Solve for x
    x = 716,535.18/752.41
  6. Step 6: Final answer
    x = 952.33

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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.