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Finding the Fourth Proportional to 472.05, 708.62 and 328.41

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Solution

The fourth proportional to 472.05, 708.62 and 328.41 is: 492.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.05 : 708.62 = 328.41 : x
  2. Step 2: Convert to fraction form
    472.05/708.62 = 328.41/x
  3. Step 3: Cross multiply
    472.05x = 708.62 × 328.41
  4. Step 4: Simplify right side
    472.05x = 232,716.25
  5. Step 5: Solve for x
    x = 232,716.25/472.05
  6. Step 6: Final answer
    x = 492.99

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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.