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Finding the Fourth Proportional to 262.37, 393.43 and 97.72

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Solution

The fourth proportional to 262.37, 393.43 and 97.72 is: 146.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.37 : 393.43 = 97.72 : x
  2. Step 2: Convert to fraction form
    262.37/393.43 = 97.72/x
  3. Step 3: Cross multiply
    262.37x = 393.43 × 97.72
  4. Step 4: Simplify right side
    262.37x = 38,444.75
  5. Step 5: Solve for x
    x = 38,444.75/262.37
  6. Step 6: Final answer
    x = 146.53

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.