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Finding the Fourth Proportional to 955.18, 1,319.40 and 798.34

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Solution

The fourth proportional to 955.18, 1,319.40 and 798.34 is: 1,102.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.18 : 1,319.40 = 798.34 : x
  2. Step 2: Convert to fraction form
    955.18/1,319.40 = 798.34/x
  3. Step 3: Cross multiply
    955.18x = 1,319.40 × 798.34
  4. Step 4: Simplify right side
    955.18x = 1,053,329.80
  5. Step 5: Solve for x
    x = 1,053,329.80/955.18
  6. Step 6: Final answer
    x = 1,102.76

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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.