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Finding the Fourth Proportional to 659.67, 989.33 and 197.33

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Solution

The fourth proportional to 659.67, 989.33 and 197.33 is: 295.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    659.67 : 989.33 = 197.33 : x
  2. Step 2: Convert to fraction form
    659.67/989.33 = 197.33/x
  3. Step 3: Cross multiply
    659.67x = 989.33 × 197.33
  4. Step 4: Simplify right side
    659.67x = 195,222.51
  5. Step 5: Solve for x
    x = 195,222.51/659.67
  6. Step 6: Final answer
    x = 295.94

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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.