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Finding the Fourth Proportional to 611.86, 844.08 and 446

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Solution

The fourth proportional to 611.86, 844.08 and 446 is: 615.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.86 : 844.08 = 446 : x
  2. Step 2: Convert to fraction form
    611.86/844.08 = 446/x
  3. Step 3: Cross multiply
    611.86x = 844.08 × 446
  4. Step 4: Simplify right side
    611.86x = 376,459.68
  5. Step 5: Solve for x
    x = 376,459.68/611.86
  6. Step 6: Final answer
    x = 615.27

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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.