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Finding the Fourth Proportional to 359.17, 495.72 and 209.88

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Solution

The fourth proportional to 359.17, 495.72 and 209.88 is: 289.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.17 : 495.72 = 209.88 : x
  2. Step 2: Convert to fraction form
    359.17/495.72 = 209.88/x
  3. Step 3: Cross multiply
    359.17x = 495.72 × 209.88
  4. Step 4: Simplify right side
    359.17x = 104,041.71
  5. Step 5: Solve for x
    x = 104,041.71/359.17
  6. Step 6: Final answer
    x = 289.67

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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.