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Finding the Fourth Proportional to 418.69, 628.13 and 175.24

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Solution

The fourth proportional to 418.69, 628.13 and 175.24 is: 262.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.69 : 628.13 = 175.24 : x
  2. Step 2: Convert to fraction form
    418.69/628.13 = 175.24/x
  3. Step 3: Cross multiply
    418.69x = 628.13 × 175.24
  4. Step 4: Simplify right side
    418.69x = 110,073.50
  5. Step 5: Solve for x
    x = 110,073.50/418.69
  6. Step 6: Final answer
    x = 262.90

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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.