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Finding the Fourth Proportional to 622.48, 859.29 and 443.14

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Solution

The fourth proportional to 622.48, 859.29 and 443.14 is: 611.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.48 : 859.29 = 443.14 : x
  2. Step 2: Convert to fraction form
    622.48/859.29 = 443.14/x
  3. Step 3: Cross multiply
    622.48x = 859.29 × 443.14
  4. Step 4: Simplify right side
    622.48x = 380,788.46
  5. Step 5: Solve for x
    x = 380,788.46/622.48
  6. Step 6: Final answer
    x = 611.73

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Double scale
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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.