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Finding the Fourth Proportional to 275.64, 375.60 and 274.68

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Solution

The fourth proportional to 275.64, 375.60 and 274.68 is: 374.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.64 : 375.60 = 274.68 : x
  2. Step 2: Convert to fraction form
    275.64/375.60 = 274.68/x
  3. Step 3: Cross multiply
    275.64x = 375.60 × 274.68
  4. Step 4: Simplify right side
    275.64x = 103,169.81
  5. Step 5: Solve for x
    x = 103,169.81/275.64
  6. Step 6: Final answer
    x = 374.29

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.