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Finding the Fourth Proportional to 614.01, 847.08 and 439.59

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Solution

The fourth proportional to 614.01, 847.08 and 439.59 is: 606.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.01 : 847.08 = 439.59 : x
  2. Step 2: Convert to fraction form
    614.01/847.08 = 439.59/x
  3. Step 3: Cross multiply
    614.01x = 847.08 × 439.59
  4. Step 4: Simplify right side
    614.01x = 372,367.90
  5. Step 5: Solve for x
    x = 372,367.90/614.01
  6. Step 6: Final answer
    x = 606.45

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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.