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Finding the Fourth Proportional to 372.49, 554.50 and 354.80

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Solution

The fourth proportional to 372.49, 554.50 and 354.80 is: 528.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.49 : 554.50 = 354.80 : x
  2. Step 2: Convert to fraction form
    372.49/554.50 = 354.80/x
  3. Step 3: Cross multiply
    372.49x = 554.50 × 354.80
  4. Step 4: Simplify right side
    372.49x = 196,736.60
  5. Step 5: Solve for x
    x = 196,736.60/372.49
  6. Step 6: Final answer
    x = 528.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.