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Finding the Fourth Proportional to 439.83, 657.99 and 374.49

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Solution

The fourth proportional to 439.83, 657.99 and 374.49 is: 560.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.83 : 657.99 = 374.49 : x
  2. Step 2: Convert to fraction form
    439.83/657.99 = 374.49/x
  3. Step 3: Cross multiply
    439.83x = 657.99 × 374.49
  4. Step 4: Simplify right side
    439.83x = 246,410.68
  5. Step 5: Solve for x
    x = 246,410.68/439.83
  6. Step 6: Final answer
    x = 560.24

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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.