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Finding the Fourth Proportional to 656.10, 984.30 and 223.25

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Solution

The fourth proportional to 656.10, 984.30 and 223.25 is: 334.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.10 : 984.30 = 223.25 : x
  2. Step 2: Convert to fraction form
    656.10/984.30 = 223.25/x
  3. Step 3: Cross multiply
    656.10x = 984.30 × 223.25
  4. Step 4: Simplify right side
    656.10x = 219,743.86
  5. Step 5: Solve for x
    x = 219,743.86/656.10
  6. Step 6: Final answer
    x = 334.93

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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.