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Finding the Fourth Proportional to 371.95, 513.36 and 222.60

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Solution

The fourth proportional to 371.95, 513.36 and 222.60 is: 307.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.95 : 513.36 = 222.60 : x
  2. Step 2: Convert to fraction form
    371.95/513.36 = 222.60/x
  3. Step 3: Cross multiply
    371.95x = 513.36 × 222.60
  4. Step 4: Simplify right side
    371.95x = 114,275.86
  5. Step 5: Solve for x
    x = 114,275.86/371.95
  6. Step 6: Final answer
    x = 307.24

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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.