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Finding the Fourth Proportional to 495.23, 683.40 and 274.19

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Solution

The fourth proportional to 495.23, 683.40 and 274.19 is: 378.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.23 : 683.40 = 274.19 : x
  2. Step 2: Convert to fraction form
    495.23/683.40 = 274.19/x
  3. Step 3: Cross multiply
    495.23x = 683.40 × 274.19
  4. Step 4: Simplify right side
    495.23x = 187,378.03
  5. Step 5: Solve for x
    x = 187,378.03/495.23
  6. Step 6: Final answer
    x = 378.37

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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.