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Finding the Fourth Proportional to 612.62, 844.46 and 415.79

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Solution

The fourth proportional to 612.62, 844.46 and 415.79 is: 573.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.62 : 844.46 = 415.79 : x
  2. Step 2: Convert to fraction form
    612.62/844.46 = 415.79/x
  3. Step 3: Cross multiply
    612.62x = 844.46 × 415.79
  4. Step 4: Simplify right side
    612.62x = 351,115.94
  5. Step 5: Solve for x
    x = 351,115.94/612.62
  6. Step 6: Final answer
    x = 573.14

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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.