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Finding the Fourth Proportional to 631.44, 946.59 and 266.25

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Solution

The fourth proportional to 631.44, 946.59 and 266.25 is: 399.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.44 : 946.59 = 266.25 : x
  2. Step 2: Convert to fraction form
    631.44/946.59 = 266.25/x
  3. Step 3: Cross multiply
    631.44x = 946.59 × 266.25
  4. Step 4: Simplify right side
    631.44x = 252,029.59
  5. Step 5: Solve for x
    x = 252,029.59/631.44
  6. Step 6: Final answer
    x = 399.13

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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.