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Finding the Fourth Proportional to 612.36, 844.74 and 571.08

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Solution

The fourth proportional to 612.36, 844.74 and 571.08 is: 787.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.36 : 844.74 = 571.08 : x
  2. Step 2: Convert to fraction form
    612.36/844.74 = 571.08/x
  3. Step 3: Cross multiply
    612.36x = 844.74 × 571.08
  4. Step 4: Simplify right side
    612.36x = 482,414.12
  5. Step 5: Solve for x
    x = 482,414.12/612.36
  6. Step 6: Final answer
    x = 787.79

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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.