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Finding the Fourth Proportional to 495.32, 683.50 and 274.22

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Solution

The fourth proportional to 495.32, 683.50 and 274.22 is: 378.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.32 : 683.50 = 274.22 : x
  2. Step 2: Convert to fraction form
    495.32/683.50 = 274.22/x
  3. Step 3: Cross multiply
    495.32x = 683.50 × 274.22
  4. Step 4: Simplify right side
    495.32x = 187,429.37
  5. Step 5: Solve for x
    x = 187,429.37/495.32
  6. Step 6: Final answer
    x = 378.40

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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.