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Finding the Fourth Proportional to 480.08, 723.67 and 439.08

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Solution

The fourth proportional to 480.08, 723.67 and 439.08 is: 661.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.08 : 723.67 = 439.08 : x
  2. Step 2: Convert to fraction form
    480.08/723.67 = 439.08/x
  3. Step 3: Cross multiply
    480.08x = 723.67 × 439.08
  4. Step 4: Simplify right side
    480.08x = 317,749.02
  5. Step 5: Solve for x
    x = 317,749.02/480.08
  6. Step 6: Final answer
    x = 661.87

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.