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Finding the Fourth Proportional to 1,015.81, 1,401.97 and 737.31

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Solution

The fourth proportional to 1,015.81, 1,401.97 and 737.31 is: 1,017.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015.81 : 1,401.97 = 737.31 : x
  2. Step 2: Convert to fraction form
    1,015.81/1,401.97 = 737.31/x
  3. Step 3: Cross multiply
    1,015.81x = 1,401.97 × 737.31
  4. Step 4: Simplify right side
    1,015.81x = 1,033,679.49
  5. Step 5: Solve for x
    x = 1,033,679.49/1,015.81
  6. Step 6: Final answer
    x = 1,017.59

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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.