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Finding the Fourth Proportional to 253.56, 378.60 and 175.92

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Solution

The fourth proportional to 253.56, 378.60 and 175.92 is: 262.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.56 : 378.60 = 175.92 : x
  2. Step 2: Convert to fraction form
    253.56/378.60 = 175.92/x
  3. Step 3: Cross multiply
    253.56x = 378.60 × 175.92
  4. Step 4: Simplify right side
    253.56x = 66,603.31
  5. Step 5: Solve for x
    x = 66,603.31/253.56
  6. Step 6: Final answer
    x = 262.67

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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.