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Finding the Fourth Proportional to 222.95, 333.67 and 145.80

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Solution

The fourth proportional to 222.95, 333.67 and 145.80 is: 218.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.95 : 333.67 = 145.80 : x
  2. Step 2: Convert to fraction form
    222.95/333.67 = 145.80/x
  3. Step 3: Cross multiply
    222.95x = 333.67 × 145.80
  4. Step 4: Simplify right side
    222.95x = 48,648.99
  5. Step 5: Solve for x
    x = 48,648.99/222.95
  6. Step 6: Final answer
    x = 218.20

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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.