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Finding the Fourth Proportional to 479.90, 662.31 and 270.07

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Solution

The fourth proportional to 479.90, 662.31 and 270.07 is: 372.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.90 : 662.31 = 270.07 : x
  2. Step 2: Convert to fraction form
    479.90/662.31 = 270.07/x
  3. Step 3: Cross multiply
    479.90x = 662.31 × 270.07
  4. Step 4: Simplify right side
    479.90x = 178,868.41
  5. Step 5: Solve for x
    x = 178,868.41/479.90
  6. Step 6: Final answer
    x = 372.72

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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.