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Finding the Fourth Proportional to 369.64, 554.78 and 248.05

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Solution

The fourth proportional to 369.64, 554.78 and 248.05 is: 372.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.64 : 554.78 = 248.05 : x
  2. Step 2: Convert to fraction form
    369.64/554.78 = 248.05/x
  3. Step 3: Cross multiply
    369.64x = 554.78 × 248.05
  4. Step 4: Simplify right side
    369.64x = 137,609.16
  5. Step 5: Solve for x
    x = 137,609.16/369.64
  6. Step 6: Final answer
    x = 372.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.