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Finding the Fourth Proportional to 772.22, 1,158.52 and 224.44

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Solution

The fourth proportional to 772.22, 1,158.52 and 224.44 is: 336.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    772.22 : 1,158.52 = 224.44 : x
  2. Step 2: Convert to fraction form
    772.22/1,158.52 = 224.44/x
  3. Step 3: Cross multiply
    772.22x = 1,158.52 × 224.44
  4. Step 4: Simplify right side
    772.22x = 260,018.23
  5. Step 5: Solve for x
    x = 260,018.23/772.22
  6. Step 6: Final answer
    x = 336.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.