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Finding the Fourth Proportional to 442.46, 610.58 and 243.30

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Solution

The fourth proportional to 442.46, 610.58 and 243.30 is: 335.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.46 : 610.58 = 243.30 : x
  2. Step 2: Convert to fraction form
    442.46/610.58 = 243.30/x
  3. Step 3: Cross multiply
    442.46x = 610.58 × 243.30
  4. Step 4: Simplify right side
    442.46x = 148,554.11
  5. Step 5: Solve for x
    x = 148,554.11/442.46
  6. Step 6: Final answer
    x = 335.75

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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.