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Finding the Fourth Proportional to 480.43, 662.88 and 284.01

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Solution

The fourth proportional to 480.43, 662.88 and 284.01 is: 391.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.43 : 662.88 = 284.01 : x
  2. Step 2: Convert to fraction form
    480.43/662.88 = 284.01/x
  3. Step 3: Cross multiply
    480.43x = 662.88 × 284.01
  4. Step 4: Simplify right side
    480.43x = 188,263.13
  5. Step 5: Solve for x
    x = 188,263.13/480.43
  6. Step 6: Final answer
    x = 391.86

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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.