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Finding the Fourth Proportional to 741.75, 1,112.55 and 254.77

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Solution

The fourth proportional to 741.75, 1,112.55 and 254.77 is: 382.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.75 : 1,112.55 = 254.77 : x
  2. Step 2: Convert to fraction form
    741.75/1,112.55 = 254.77/x
  3. Step 3: Cross multiply
    741.75x = 1,112.55 × 254.77
  4. Step 4: Simplify right side
    741.75x = 283,444.36
  5. Step 5: Solve for x
    x = 283,444.36/741.75
  6. Step 6: Final answer
    x = 382.13

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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.