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Finding the Fourth Proportional to 480.39, 662.05 and 375.31

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Solution

The fourth proportional to 480.39, 662.05 and 375.31 is: 517.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.39 : 662.05 = 375.31 : x
  2. Step 2: Convert to fraction form
    480.39/662.05 = 375.31/x
  3. Step 3: Cross multiply
    480.39x = 662.05 × 375.31
  4. Step 4: Simplify right side
    480.39x = 248,473.99
  5. Step 5: Solve for x
    x = 248,473.99/480.39
  6. Step 6: Final answer
    x = 517.23

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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.