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Finding the Fourth Proportional to 656.53, 984.94 and 379.07

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Solution

The fourth proportional to 656.53, 984.94 and 379.07 is: 568.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.53 : 984.94 = 379.07 : x
  2. Step 2: Convert to fraction form
    656.53/984.94 = 379.07/x
  3. Step 3: Cross multiply
    656.53x = 984.94 × 379.07
  4. Step 4: Simplify right side
    656.53x = 373,361.16
  5. Step 5: Solve for x
    x = 373,361.16/656.53
  6. Step 6: Final answer
    x = 568.69

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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.