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Finding the Fourth Proportional to 442.08, 609.72 and 294.72

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Solution

The fourth proportional to 442.08, 609.72 and 294.72 is: 406.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.08 : 609.72 = 294.72 : x
  2. Step 2: Convert to fraction form
    442.08/609.72 = 294.72/x
  3. Step 3: Cross multiply
    442.08x = 609.72 × 294.72
  4. Step 4: Simplify right side
    442.08x = 179,696.68
  5. Step 5: Solve for x
    x = 179,696.68/442.08
  6. Step 6: Final answer
    x = 406.48

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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.