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Finding the Fourth Proportional to 979.52, 1,350.84 and 882.32

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Solution

The fourth proportional to 979.52, 1,350.84 and 882.32 is: 1,216.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    979.52 : 1,350.84 = 882.32 : x
  2. Step 2: Convert to fraction form
    979.52/1,350.84 = 882.32/x
  3. Step 3: Cross multiply
    979.52x = 1,350.84 × 882.32
  4. Step 4: Simplify right side
    979.52x = 1,191,873.15
  5. Step 5: Solve for x
    x = 1,191,873.15/979.52
  6. Step 6: Final answer
    x = 1,216.79

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1.5x scale

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.