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Finding the Fourth Proportional to 657.61, 984.67 and 397.26

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Solution

The fourth proportional to 657.61, 984.67 and 397.26 is: 594.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.61 : 984.67 = 397.26 : x
  2. Step 2: Convert to fraction form
    657.61/984.67 = 397.26/x
  3. Step 3: Cross multiply
    657.61x = 984.67 × 397.26
  4. Step 4: Simplify right side
    657.61x = 391,170.00
  5. Step 5: Solve for x
    x = 391,170.00/657.61
  6. Step 6: Final answer
    x = 594.84

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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.