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Finding the Fourth Proportional to 472.25, 708.42 and 228.44

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Solution

The fourth proportional to 472.25, 708.42 and 228.44 is: 342.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.25 : 708.42 = 228.44 : x
  2. Step 2: Convert to fraction form
    472.25/708.42 = 228.44/x
  3. Step 3: Cross multiply
    472.25x = 708.42 × 228.44
  4. Step 4: Simplify right side
    472.25x = 161,831.46
  5. Step 5: Solve for x
    x = 161,831.46/472.25
  6. Step 6: Final answer
    x = 342.68

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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.