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Finding the Fourth Proportional to 480.31, 662.88 and 270.56

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Solution

The fourth proportional to 480.31, 662.88 and 270.56 is: 373.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.31 : 662.88 = 270.56 : x
  2. Step 2: Convert to fraction form
    480.31/662.88 = 270.56/x
  3. Step 3: Cross multiply
    480.31x = 662.88 × 270.56
  4. Step 4: Simplify right side
    480.31x = 179,348.81
  5. Step 5: Solve for x
    x = 179,348.81/480.31
  6. Step 6: Final answer
    x = 373.41

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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.