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Finding the Fourth Proportional to 359.51, 539.95 and 223.51

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Solution

The fourth proportional to 359.51, 539.95 and 223.51 is: 335.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.51 : 539.95 = 223.51 : x
  2. Step 2: Convert to fraction form
    359.51/539.95 = 223.51/x
  3. Step 3: Cross multiply
    359.51x = 539.95 × 223.51
  4. Step 4: Simplify right side
    359.51x = 120,682.23
  5. Step 5: Solve for x
    x = 120,682.23/359.51
  6. Step 6: Final answer
    x = 335.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.