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Finding the Fourth Proportional to 659.07, 989.17 and 366.86

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Solution

The fourth proportional to 659.07, 989.17 and 366.86 is: 550.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    659.07 : 989.17 = 366.86 : x
  2. Step 2: Convert to fraction form
    659.07/989.17 = 366.86/x
  3. Step 3: Cross multiply
    659.07x = 989.17 × 366.86
  4. Step 4: Simplify right side
    659.07x = 362,888.46
  5. Step 5: Solve for x
    x = 362,888.46/659.07
  6. Step 6: Final answer
    x = 550.61

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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.