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Finding the Fourth Proportional to 359.51, 494.96 and 306.95

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Solution

The fourth proportional to 359.51, 494.96 and 306.95 is: 422.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.51 : 494.96 = 306.95 : x
  2. Step 2: Convert to fraction form
    359.51/494.96 = 306.95/x
  3. Step 3: Cross multiply
    359.51x = 494.96 × 306.95
  4. Step 4: Simplify right side
    359.51x = 151,923.96
  5. Step 5: Solve for x
    x = 151,923.96/359.51
  6. Step 6: Final answer
    x = 422.59

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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.