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Finding the Fourth Proportional to 950.88, 1,313.04 and 919.88

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Solution

The fourth proportional to 950.88, 1,313.04 and 919.88 is: 1,270.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.88 : 1,313.04 = 919.88 : x
  2. Step 2: Convert to fraction form
    950.88/1,313.04 = 919.88/x
  3. Step 3: Cross multiply
    950.88x = 1,313.04 × 919.88
  4. Step 4: Simplify right side
    950.88x = 1,207,839.24
  5. Step 5: Solve for x
    x = 1,207,839.24/950.88
  6. Step 6: Final answer
    x = 1,270.23

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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.