Home / 1,285.54-1,928.19-361.18

Finding the Fourth Proportional to 1,285.54, 1,928.19 and 361.18

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Solution

The fourth proportional to 1,285.54, 1,928.19 and 361.18 is: 541.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285.54 : 1,928.19 = 361.18 : x
  2. Step 2: Convert to fraction form
    1,285.54/1,928.19 = 361.18/x
  3. Step 3: Cross multiply
    1,285.54x = 1,928.19 × 361.18
  4. Step 4: Simplify right side
    1,285.54x = 696,423.66
  5. Step 5: Solve for x
    x = 696,423.66/1,285.54
  6. Step 6: Final answer
    x = 541.74

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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.