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Finding the Fourth Proportional to 351.79, 527.34 and 228.47

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Solution

The fourth proportional to 351.79, 527.34 and 228.47 is: 342.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.79 : 527.34 = 228.47 : x
  2. Step 2: Convert to fraction form
    351.79/527.34 = 228.47/x
  3. Step 3: Cross multiply
    351.79x = 527.34 × 228.47
  4. Step 4: Simplify right side
    351.79x = 120,480.63
  5. Step 5: Solve for x
    x = 120,480.63/351.79
  6. Step 6: Final answer
    x = 342.48

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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.