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Finding the Fourth Proportional to 223.04, 334.46 and 85.98

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Solution

The fourth proportional to 223.04, 334.46 and 85.98 is: 128.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.04 : 334.46 = 85.98 : x
  2. Step 2: Convert to fraction form
    223.04/334.46 = 85.98/x
  3. Step 3: Cross multiply
    223.04x = 334.46 × 85.98
  4. Step 4: Simplify right side
    223.04x = 28,756.44
  5. Step 5: Solve for x
    x = 28,756.44/223.04
  6. Step 6: Final answer
    x = 128.93

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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.