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Finding the Fourth Proportional to 450.91, 672.92 and 395.08

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Solution

The fourth proportional to 450.91, 672.92 and 395.08 is: 589.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.91 : 672.92 = 395.08 : x
  2. Step 2: Convert to fraction form
    450.91/672.92 = 395.08/x
  3. Step 3: Cross multiply
    450.91x = 672.92 × 395.08
  4. Step 4: Simplify right side
    450.91x = 265,853.87
  5. Step 5: Solve for x
    x = 265,853.87/450.91
  6. Step 6: Final answer
    x = 589.59

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.