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Finding the Fourth Proportional to 480.98, 663.54 and 284.38

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Solution

The fourth proportional to 480.98, 663.54 and 284.38 is: 392.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.98 : 663.54 = 284.38 : x
  2. Step 2: Convert to fraction form
    480.98/663.54 = 284.38/x
  3. Step 3: Cross multiply
    480.98x = 663.54 × 284.38
  4. Step 4: Simplify right side
    480.98x = 188,697.51
  5. Step 5: Solve for x
    x = 188,697.51/480.98
  6. Step 6: Final answer
    x = 392.32

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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.