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Finding the Fourth Proportional to 245.92, 339.60 and 154.08

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Solution

The fourth proportional to 245.92, 339.60 and 154.08 is: 212.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.92 : 339.60 = 154.08 : x
  2. Step 2: Convert to fraction form
    245.92/339.60 = 154.08/x
  3. Step 3: Cross multiply
    245.92x = 339.60 × 154.08
  4. Step 4: Simplify right side
    245.92x = 52,325.57
  5. Step 5: Solve for x
    x = 52,325.57/245.92
  6. Step 6: Final answer
    x = 212.77

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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.