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Finding the Fourth Proportional to 359.67, 496.82 and 290

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Solution

The fourth proportional to 359.67, 496.82 and 290 is: 400.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.67 : 496.82 = 290 : x
  2. Step 2: Convert to fraction form
    359.67/496.82 = 290/x
  3. Step 3: Cross multiply
    359.67x = 496.82 × 290
  4. Step 4: Simplify right side
    359.67x = 144,077.80
  5. Step 5: Solve for x
    x = 144,077.80/359.67
  6. Step 6: Final answer
    x = 400.58

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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.