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Finding the Fourth Proportional to 612.03, 844.20 and 379.14

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Solution

The fourth proportional to 612.03, 844.20 and 379.14 is: 522.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.03 : 844.20 = 379.14 : x
  2. Step 2: Convert to fraction form
    612.03/844.20 = 379.14/x
  3. Step 3: Cross multiply
    612.03x = 844.20 × 379.14
  4. Step 4: Simplify right side
    612.03x = 320,069.99
  5. Step 5: Solve for x
    x = 320,069.99/612.03
  6. Step 6: Final answer
    x = 522.96

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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.