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Finding the Fourth Proportional to 949.93, 1,310.36 and 571.56

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Solution

The fourth proportional to 949.93, 1,310.36 and 571.56 is: 788.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    949.93 : 1,310.36 = 571.56 : x
  2. Step 2: Convert to fraction form
    949.93/1,310.36 = 571.56/x
  3. Step 3: Cross multiply
    949.93x = 1,310.36 × 571.56
  4. Step 4: Simplify right side
    949.93x = 748,949.36
  5. Step 5: Solve for x
    x = 748,949.36/949.93
  6. Step 6: Final answer
    x = 788.43

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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.