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Finding the Fourth Proportional to 222.06, 332.64 and 140.80

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Solution

The fourth proportional to 222.06, 332.64 and 140.80 is: 210.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.06 : 332.64 = 140.80 : x
  2. Step 2: Convert to fraction form
    222.06/332.64 = 140.80/x
  3. Step 3: Cross multiply
    222.06x = 332.64 × 140.80
  4. Step 4: Simplify right side
    222.06x = 46,835.71
  5. Step 5: Solve for x
    x = 46,835.71/222.06
  6. Step 6: Final answer
    x = 210.91

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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.