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Finding the Fourth Proportional to 379.98, 524.28 and 262.20

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Solution

The fourth proportional to 379.98, 524.28 and 262.20 is: 361.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.98 : 524.28 = 262.20 : x
  2. Step 2: Convert to fraction form
    379.98/524.28 = 262.20/x
  3. Step 3: Cross multiply
    379.98x = 524.28 × 262.20
  4. Step 4: Simplify right side
    379.98x = 137,466.22
  5. Step 5: Solve for x
    x = 137,466.22/379.98
  6. Step 6: Final answer
    x = 361.77

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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.