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Finding the Fourth Proportional to 955.12, 1,318.48 and 582.22

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Solution

The fourth proportional to 955.12, 1,318.48 and 582.22 is: 803.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.12 : 1,318.48 = 582.22 : x
  2. Step 2: Convert to fraction form
    955.12/1,318.48 = 582.22/x
  3. Step 3: Cross multiply
    955.12x = 1,318.48 × 582.22
  4. Step 4: Simplify right side
    955.12x = 767,645.43
  5. Step 5: Solve for x
    x = 767,645.43/955.12
  6. Step 6: Final answer
    x = 803.72

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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.