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Finding the Fourth Proportional to 246.52, 340.16 and 143

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Solution

The fourth proportional to 246.52, 340.16 and 143 is: 197.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.52 : 340.16 = 143 : x
  2. Step 2: Convert to fraction form
    246.52/340.16 = 143/x
  3. Step 3: Cross multiply
    246.52x = 340.16 × 143
  4. Step 4: Simplify right side
    246.52x = 48,642.88
  5. Step 5: Solve for x
    x = 48,642.88/246.52
  6. Step 6: Final answer
    x = 197.32

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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.