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Finding the Fourth Proportional to 418.17, 576.86 and 260.83

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Solution

The fourth proportional to 418.17, 576.86 and 260.83 is: 359.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.17 : 576.86 = 260.83 : x
  2. Step 2: Convert to fraction form
    418.17/576.86 = 260.83/x
  3. Step 3: Cross multiply
    418.17x = 576.86 × 260.83
  4. Step 4: Simplify right side
    418.17x = 150,459.65
  5. Step 5: Solve for x
    x = 150,459.65/418.17
  6. Step 6: Final answer
    x = 359.80

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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.