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Finding the Fourth Proportional to 446.41, 672.10 and 386.88

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Solution

The fourth proportional to 446.41, 672.10 and 386.88 is: 582.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.41 : 672.10 = 386.88 : x
  2. Step 2: Convert to fraction form
    446.41/672.10 = 386.88/x
  3. Step 3: Cross multiply
    446.41x = 672.10 × 386.88
  4. Step 4: Simplify right side
    446.41x = 260,022.05
  5. Step 5: Solve for x
    x = 260,022.05/446.41
  6. Step 6: Final answer
    x = 582.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.