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Finding the Fourth Proportional to 612.35, 844.06 and 479.35

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Solution

The fourth proportional to 612.35, 844.06 and 479.35 is: 660.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.35 : 844.06 = 479.35 : x
  2. Step 2: Convert to fraction form
    612.35/844.06 = 479.35/x
  3. Step 3: Cross multiply
    612.35x = 844.06 × 479.35
  4. Step 4: Simplify right side
    612.35x = 404,600.16
  5. Step 5: Solve for x
    x = 404,600.16/612.35
  6. Step 6: Final answer
    x = 660.73

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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.