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Finding the Fourth Proportional to 175.20, 262.74 and 53.43

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Solution

The fourth proportional to 175.20, 262.74 and 53.43 is: 80.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.20 : 262.74 = 53.43 : x
  2. Step 2: Convert to fraction form
    175.20/262.74 = 53.43/x
  3. Step 3: Cross multiply
    175.20x = 262.74 × 53.43
  4. Step 4: Simplify right side
    175.20x = 14,038.20
  5. Step 5: Solve for x
    x = 14,038.20/175.20
  6. Step 6: Final answer
    x = 80.13

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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.