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Finding the Fourth Proportional to 1,324.99, 1,989.44 and 741.14

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Solution

The fourth proportional to 1,324.99, 1,989.44 and 741.14 is: 1,112.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324.99 : 1,989.44 = 741.14 : x
  2. Step 2: Convert to fraction form
    1,324.99/1,989.44 = 741.14/x
  3. Step 3: Cross multiply
    1,324.99x = 1,989.44 × 741.14
  4. Step 4: Simplify right side
    1,324.99x = 1,474,439.91
  5. Step 5: Solve for x
    x = 1,474,439.91/1,324.99
  6. Step 6: Final answer
    x = 1,112.79

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.