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Finding the Fourth Proportional to 1,255.36, 1,883.20 and 433.41

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Solution

The fourth proportional to 1,255.36, 1,883.20 and 433.41 is: 650.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255.36 : 1,883.20 = 433.41 : x
  2. Step 2: Convert to fraction form
    1,255.36/1,883.20 = 433.41/x
  3. Step 3: Cross multiply
    1,255.36x = 1,883.20 × 433.41
  4. Step 4: Simplify right side
    1,255.36x = 816,196.63
  5. Step 5: Solve for x
    x = 816,196.63/1,255.36
  6. Step 6: Final answer
    x = 650.17

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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.