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Finding the Fourth Proportional to 659.75, 984.15 and 608.72

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Solution

The fourth proportional to 659.75, 984.15 and 608.72 is: 908.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    659.75 : 984.15 = 608.72 : x
  2. Step 2: Convert to fraction form
    659.75/984.15 = 608.72/x
  3. Step 3: Cross multiply
    659.75x = 984.15 × 608.72
  4. Step 4: Simplify right side
    659.75x = 599,066.87
  5. Step 5: Solve for x
    x = 599,066.87/659.75
  6. Step 6: Final answer
    x = 908.03

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.