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Finding the Fourth Proportional to 626.81, 940.22 and 443.66

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Solution

The fourth proportional to 626.81, 940.22 and 443.66 is: 665.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.81 : 940.22 = 443.66 : x
  2. Step 2: Convert to fraction form
    626.81/940.22 = 443.66/x
  3. Step 3: Cross multiply
    626.81x = 940.22 × 443.66
  4. Step 4: Simplify right side
    626.81x = 417,134.41
  5. Step 5: Solve for x
    x = 417,134.41/626.81
  6. Step 6: Final answer
    x = 665.49

Related Problems

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Half scale
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Double scale
Find fourth proportional to 627.81, 941.72 and 444.66
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.