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Finding the Fourth Proportional to 245.18, 366.20 and 222.50

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Solution

The fourth proportional to 245.18, 366.20 and 222.50 is: 332.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.18 : 366.20 = 222.50 : x
  2. Step 2: Convert to fraction form
    245.18/366.20 = 222.50/x
  3. Step 3: Cross multiply
    245.18x = 366.20 × 222.50
  4. Step 4: Simplify right side
    245.18x = 81,476.56
  5. Step 5: Solve for x
    x = 81,476.56/245.18
  6. Step 6: Final answer
    x = 332.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.