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Finding the Fourth Proportional to 442.61, 664.65 and 332.92

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Solution

The fourth proportional to 442.61, 664.65 and 332.92 is: 499.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.61 : 664.65 = 332.92 : x
  2. Step 2: Convert to fraction form
    442.61/664.65 = 332.92/x
  3. Step 3: Cross multiply
    442.61x = 664.65 × 332.92
  4. Step 4: Simplify right side
    442.61x = 221,273.62
  5. Step 5: Solve for x
    x = 221,273.62/442.61
  6. Step 6: Final answer
    x = 499.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.