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Finding the Fourth Proportional to 414.80, 623.10 and 354.66

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Solution

The fourth proportional to 414.80, 623.10 and 354.66 is: 532.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    414.80 : 623.10 = 354.66 : x
  2. Step 2: Convert to fraction form
    414.80/623.10 = 354.66/x
  3. Step 3: Cross multiply
    414.80x = 623.10 × 354.66
  4. Step 4: Simplify right side
    414.80x = 220,988.65
  5. Step 5: Solve for x
    x = 220,988.65/414.80
  6. Step 6: Final answer
    x = 532.76

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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.