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Finding the Fourth Proportional to 245.71, 339 and 162.79

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Solution

The fourth proportional to 245.71, 339 and 162.79 is: 224.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.71 : 339 = 162.79 : x
  2. Step 2: Convert to fraction form
    245.71/339 = 162.79/x
  3. Step 3: Cross multiply
    245.71x = 339 × 162.79
  4. Step 4: Simplify right side
    245.71x = 55,185.81
  5. Step 5: Solve for x
    x = 55,185.81/245.71
  6. Step 6: Final answer
    x = 224.60

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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.