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Finding the Fourth Proportional to 612.21, 844.47 and 363.36

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Solution

The fourth proportional to 612.21, 844.47 and 363.36 is: 501.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.21 : 844.47 = 363.36 : x
  2. Step 2: Convert to fraction form
    612.21/844.47 = 363.36/x
  3. Step 3: Cross multiply
    612.21x = 844.47 × 363.36
  4. Step 4: Simplify right side
    612.21x = 306,845.04
  5. Step 5: Solve for x
    x = 306,845.04/612.21
  6. Step 6: Final answer
    x = 501.21

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.