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Finding the Fourth Proportional to 659.98, 989.97 and 295.08

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Solution

The fourth proportional to 659.98, 989.97 and 295.08 is: 442.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    659.98 : 989.97 = 295.08 : x
  2. Step 2: Convert to fraction form
    659.98/989.97 = 295.08/x
  3. Step 3: Cross multiply
    659.98x = 989.97 × 295.08
  4. Step 4: Simplify right side
    659.98x = 292,120.35
  5. Step 5: Solve for x
    x = 292,120.35/659.98
  6. Step 6: Final answer
    x = 442.62

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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.