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Finding the Fourth Proportional to 442.06, 609.98 and 245.58

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Solution

The fourth proportional to 442.06, 609.98 and 245.58 is: 338.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.06 : 609.98 = 245.58 : x
  2. Step 2: Convert to fraction form
    442.06/609.98 = 245.58/x
  3. Step 3: Cross multiply
    442.06x = 609.98 × 245.58
  4. Step 4: Simplify right side
    442.06x = 149,798.89
  5. Step 5: Solve for x
    x = 149,798.89/442.06
  6. Step 6: Final answer
    x = 338.87

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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.