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Finding the Fourth Proportional to 472.75, 708.62 and 228.74

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Solution

The fourth proportional to 472.75, 708.62 and 228.74 is: 342.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.75 : 708.62 = 228.74 : x
  2. Step 2: Convert to fraction form
    472.75/708.62 = 228.74/x
  3. Step 3: Cross multiply
    472.75x = 708.62 × 228.74
  4. Step 4: Simplify right side
    472.75x = 162,087.40
  5. Step 5: Solve for x
    x = 162,087.40/472.75
  6. Step 6: Final answer
    x = 342.86

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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.