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Finding the Fourth Proportional to 246.14, 339.48 and 152.78

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Solution

The fourth proportional to 246.14, 339.48 and 152.78 is: 210.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.14 : 339.48 = 152.78 : x
  2. Step 2: Convert to fraction form
    246.14/339.48 = 152.78/x
  3. Step 3: Cross multiply
    246.14x = 339.48 × 152.78
  4. Step 4: Simplify right side
    246.14x = 51,864.06
  5. Step 5: Solve for x
    x = 51,864.06/246.14
  6. Step 6: Final answer
    x = 210.71

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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.