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Finding the Fourth Proportional to 480.84, 662.90 and 369.88

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Solution

The fourth proportional to 480.84, 662.90 and 369.88 is: 509.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.84 : 662.90 = 369.88 : x
  2. Step 2: Convert to fraction form
    480.84/662.90 = 369.88/x
  3. Step 3: Cross multiply
    480.84x = 662.90 × 369.88
  4. Step 4: Simplify right side
    480.84x = 245,193.45
  5. Step 5: Solve for x
    x = 245,193.45/480.84
  6. Step 6: Final answer
    x = 509.93

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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.