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Finding the Fourth Proportional to 313.56, 432.79 and 182.65

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Solution

The fourth proportional to 313.56, 432.79 and 182.65 is: 252.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.56 : 432.79 = 182.65 : x
  2. Step 2: Convert to fraction form
    313.56/432.79 = 182.65/x
  3. Step 3: Cross multiply
    313.56x = 432.79 × 182.65
  4. Step 4: Simplify right side
    313.56x = 79,047.55
  5. Step 5: Solve for x
    x = 79,047.55/313.56
  6. Step 6: Final answer
    x = 252.09

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Why These Related Problems?

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