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Finding the Fourth Proportional to 631.96, 948.57 and 266.98

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Solution

The fourth proportional to 631.96, 948.57 and 266.98 is: 400.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.96 : 948.57 = 266.98 : x
  2. Step 2: Convert to fraction form
    631.96/948.57 = 266.98/x
  3. Step 3: Cross multiply
    631.96x = 948.57 × 266.98
  4. Step 4: Simplify right side
    631.96x = 253,249.22
  5. Step 5: Solve for x
    x = 253,249.22/631.96
  6. Step 6: Final answer
    x = 400.74

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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.