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Finding the Fourth Proportional to 952.68, 1,313.50 and 728.89

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Solution

The fourth proportional to 952.68, 1,313.50 and 728.89 is: 1,004.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    952.68 : 1,313.50 = 728.89 : x
  2. Step 2: Convert to fraction form
    952.68/1,313.50 = 728.89/x
  3. Step 3: Cross multiply
    952.68x = 1,313.50 × 728.89
  4. Step 4: Simplify right side
    952.68x = 957,386.80
  5. Step 5: Solve for x
    x = 957,386.80/952.68
  6. Step 6: Final answer
    x = 1,004.95

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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.