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Finding the Fourth Proportional to 469.98, 705.15 and 226.49

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Solution

The fourth proportional to 469.98, 705.15 and 226.49 is: 339.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.98 : 705.15 = 226.49 : x
  2. Step 2: Convert to fraction form
    469.98/705.15 = 226.49/x
  3. Step 3: Cross multiply
    469.98x = 705.15 × 226.49
  4. Step 4: Simplify right side
    469.98x = 159,705.90
  5. Step 5: Solve for x
    x = 159,705.90/469.98
  6. Step 6: Final answer
    x = 339.81

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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.