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Finding the Fourth Proportional to 1,255.35, 1,883.18 and 605.63

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Solution

The fourth proportional to 1,255.35, 1,883.18 and 605.63 is: 908.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255.35 : 1,883.18 = 605.63 : x
  2. Step 2: Convert to fraction form
    1,255.35/1,883.18 = 605.63/x
  3. Step 3: Cross multiply
    1,255.35x = 1,883.18 × 605.63
  4. Step 4: Simplify right side
    1,255.35x = 1,140,497.86
  5. Step 5: Solve for x
    x = 1,140,497.86/1,255.35
  6. Step 6: Final answer
    x = 908.51

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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.