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Finding the Fourth Proportional to 631.08, 947.06 and 220.22

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Solution

The fourth proportional to 631.08, 947.06 and 220.22 is: 330.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.08 : 947.06 = 220.22 : x
  2. Step 2: Convert to fraction form
    631.08/947.06 = 220.22/x
  3. Step 3: Cross multiply
    631.08x = 947.06 × 220.22
  4. Step 4: Simplify right side
    631.08x = 208,560.09
  5. Step 5: Solve for x
    x = 208,560.09/631.08
  6. Step 6: Final answer
    x = 330.48

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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.