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Finding the Fourth Proportional to 439.92, 607.80 and 435.60

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Solution

The fourth proportional to 439.92, 607.80 and 435.60 is: 601.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.92 : 607.80 = 435.60 : x
  2. Step 2: Convert to fraction form
    439.92/607.80 = 435.60/x
  3. Step 3: Cross multiply
    439.92x = 607.80 × 435.60
  4. Step 4: Simplify right side
    439.92x = 264,757.68
  5. Step 5: Solve for x
    x = 264,757.68/439.92
  6. Step 6: Final answer
    x = 601.83

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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.