Home / 1,311.25-1,966.39-433.52

Finding the Fourth Proportional to 1,311.25, 1,966.39 and 433.52

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Solution

The fourth proportional to 1,311.25, 1,966.39 and 433.52 is: 650.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311.25 : 1,966.39 = 433.52 : x
  2. Step 2: Convert to fraction form
    1,311.25/1,966.39 = 433.52/x
  3. Step 3: Cross multiply
    1,311.25x = 1,966.39 × 433.52
  4. Step 4: Simplify right side
    1,311.25x = 852,469.39
  5. Step 5: Solve for x
    x = 852,469.39/1,311.25
  6. Step 6: Final answer
    x = 650.12

Related Problems

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Half scale
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Double scale
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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.