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Finding the Fourth Proportional to 320.64, 480.17 and 293.33

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Solution

The fourth proportional to 320.64, 480.17 and 293.33 is: 439.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    320.64 : 480.17 = 293.33 : x
  2. Step 2: Convert to fraction form
    320.64/480.17 = 293.33/x
  3. Step 3: Cross multiply
    320.64x = 480.17 × 293.33
  4. Step 4: Simplify right side
    320.64x = 140,844.40
  5. Step 5: Solve for x
    x = 140,844.40/320.64
  6. Step 6: Final answer
    x = 439.26

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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.