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Finding the Fourth Proportional to 483.94, 672.33 and 478.18

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Solution

The fourth proportional to 483.94, 672.33 and 478.18 is: 664.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.94 : 672.33 = 478.18 : x
  2. Step 2: Convert to fraction form
    483.94/672.33 = 478.18/x
  3. Step 3: Cross multiply
    483.94x = 672.33 × 478.18
  4. Step 4: Simplify right side
    483.94x = 321,494.76
  5. Step 5: Solve for x
    x = 321,494.76/483.94
  6. Step 6: Final answer
    x = 664.33

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.