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Finding the Fourth Proportional to 952.12, 1,321.63 and 929.08

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Solution

The fourth proportional to 952.12, 1,321.63 and 929.08 is: 1,289.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    952.12 : 1,321.63 = 929.08 : x
  2. Step 2: Convert to fraction form
    952.12/1,321.63 = 929.08/x
  3. Step 3: Cross multiply
    952.12x = 1,321.63 × 929.08
  4. Step 4: Simplify right side
    952.12x = 1,227,900.00
  5. Step 5: Solve for x
    x = 1,227,900.00/952.12
  6. Step 6: Final answer
    x = 1,289.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.