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Finding the Fourth Proportional to 940.49, 1,296.38 and 741.01

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Solution

The fourth proportional to 940.49, 1,296.38 and 741.01 is: 1,021.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    940.49 : 1,296.38 = 741.01 : x
  2. Step 2: Convert to fraction form
    940.49/1,296.38 = 741.01/x
  3. Step 3: Cross multiply
    940.49x = 1,296.38 × 741.01
  4. Step 4: Simplify right side
    940.49x = 960,620.36
  5. Step 5: Solve for x
    x = 960,620.36/940.49
  6. Step 6: Final answer
    x = 1,021.40

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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.