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Finding the Fourth Proportional to 657.04, 984.18 and 396.22

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Solution

The fourth proportional to 657.04, 984.18 and 396.22 is: 593.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.04 : 984.18 = 396.22 : x
  2. Step 2: Convert to fraction form
    657.04/984.18 = 396.22/x
  3. Step 3: Cross multiply
    657.04x = 984.18 × 396.22
  4. Step 4: Simplify right side
    657.04x = 389,951.80
  5. Step 5: Solve for x
    x = 389,951.80/657.04
  6. Step 6: Final answer
    x = 593.50

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.