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Finding the Fourth Proportional to 407.82, 610.44 and 297.90

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Solution

The fourth proportional to 407.82, 610.44 and 297.90 is: 445.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.82 : 610.44 = 297.90 : x
  2. Step 2: Convert to fraction form
    407.82/610.44 = 297.90/x
  3. Step 3: Cross multiply
    407.82x = 610.44 × 297.90
  4. Step 4: Simplify right side
    407.82x = 181,850.08
  5. Step 5: Solve for x
    x = 181,850.08/407.82
  6. Step 6: Final answer
    x = 445.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.