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Finding the Fourth Proportional to 1,255.37, 1,883.16 and 433.65

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Solution

The fourth proportional to 1,255.37, 1,883.16 and 433.65 is: 650.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255.37 : 1,883.16 = 433.65 : x
  2. Step 2: Convert to fraction form
    1,255.37/1,883.16 = 433.65/x
  3. Step 3: Cross multiply
    1,255.37x = 1,883.16 × 433.65
  4. Step 4: Simplify right side
    1,255.37x = 816,632.33
  5. Step 5: Solve for x
    x = 816,632.33/1,255.37
  6. Step 6: Final answer
    x = 650.51

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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.