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Finding the Fourth Proportional to 228.34, 343.99 and 225.50

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Solution

The fourth proportional to 228.34, 343.99 and 225.50 is: 339.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.34 : 343.99 = 225.50 : x
  2. Step 2: Convert to fraction form
    228.34/343.99 = 225.50/x
  3. Step 3: Cross multiply
    228.34x = 343.99 × 225.50
  4. Step 4: Simplify right side
    228.34x = 77,570.04
  5. Step 5: Solve for x
    x = 77,570.04/228.34
  6. Step 6: Final answer
    x = 339.72

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.