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Finding the Fourth Proportional to 359.39, 495.78 and 228.17

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Solution

The fourth proportional to 359.39, 495.78 and 228.17 is: 314.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.39 : 495.78 = 228.17 : x
  2. Step 2: Convert to fraction form
    359.39/495.78 = 228.17/x
  3. Step 3: Cross multiply
    359.39x = 495.78 × 228.17
  4. Step 4: Simplify right side
    359.39x = 113,122.12
  5. Step 5: Solve for x
    x = 113,122.12/359.39
  6. Step 6: Final answer
    x = 314.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.