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Finding the Fourth Proportional to 359.64, 495.68 and 328.64

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Solution

The fourth proportional to 359.64, 495.68 and 328.64 is: 452.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.64 : 495.68 = 328.64 : x
  2. Step 2: Convert to fraction form
    359.64/495.68 = 328.64/x
  3. Step 3: Cross multiply
    359.64x = 495.68 × 328.64
  4. Step 4: Simplify right side
    359.64x = 162,900.28
  5. Step 5: Solve for x
    x = 162,900.28/359.64
  6. Step 6: Final answer
    x = 452.95

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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.