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Finding the Fourth Proportional to 246.94, 340.95 and 153.71

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Solution

The fourth proportional to 246.94, 340.95 and 153.71 is: 212.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.94 : 340.95 = 153.71 : x
  2. Step 2: Convert to fraction form
    246.94/340.95 = 153.71/x
  3. Step 3: Cross multiply
    246.94x = 340.95 × 153.71
  4. Step 4: Simplify right side
    246.94x = 52,405.72
  5. Step 5: Solve for x
    x = 52,405.72/246.94
  6. Step 6: Final answer
    x = 212.22

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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.