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Finding the Fourth Proportional to 235.56, 324.62 and 156.79

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Solution

The fourth proportional to 235.56, 324.62 and 156.79 is: 216.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.56 : 324.62 = 156.79 : x
  2. Step 2: Convert to fraction form
    235.56/324.62 = 156.79/x
  3. Step 3: Cross multiply
    235.56x = 324.62 × 156.79
  4. Step 4: Simplify right side
    235.56x = 50,898.26
  5. Step 5: Solve for x
    x = 50,898.26/235.56
  6. Step 6: Final answer
    x = 216.07

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.