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Finding the Fourth Proportional to 439.59, 607.36 and 347.04

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Solution

The fourth proportional to 439.59, 607.36 and 347.04 is: 479.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.59 : 607.36 = 347.04 : x
  2. Step 2: Convert to fraction form
    439.59/607.36 = 347.04/x
  3. Step 3: Cross multiply
    439.59x = 607.36 × 347.04
  4. Step 4: Simplify right side
    439.59x = 210,778.49
  5. Step 5: Solve for x
    x = 210,778.49/439.59
  6. Step 6: Final answer
    x = 479.49

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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.