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Finding the Fourth Proportional to 245.63, 339.12 and 190.28

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Solution

The fourth proportional to 245.63, 339.12 and 190.28 is: 262.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.63 : 339.12 = 190.28 : x
  2. Step 2: Convert to fraction form
    245.63/339.12 = 190.28/x
  3. Step 3: Cross multiply
    245.63x = 339.12 × 190.28
  4. Step 4: Simplify right side
    245.63x = 64,527.75
  5. Step 5: Solve for x
    x = 64,527.75/245.63
  6. Step 6: Final answer
    x = 262.70

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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.