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Finding the Fourth Proportional to 656.05, 984.60 and 579.17

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Solution

The fourth proportional to 656.05, 984.60 and 579.17 is: 869.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.05 : 984.60 = 579.17 : x
  2. Step 2: Convert to fraction form
    656.05/984.60 = 579.17/x
  3. Step 3: Cross multiply
    656.05x = 984.60 × 579.17
  4. Step 4: Simplify right side
    656.05x = 570,245.86
  5. Step 5: Solve for x
    x = 570,245.86/656.05
  6. Step 6: Final answer
    x = 869.21

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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.