Home / 1,285.36-1,927.82-361.02

Finding the Fourth Proportional to 1,285.36, 1,927.82 and 361.02

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Solution

The fourth proportional to 1,285.36, 1,927.82 and 361.02 is: 541.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285.36 : 1,927.82 = 361.02 : x
  2. Step 2: Convert to fraction form
    1,285.36/1,927.82 = 361.02/x
  3. Step 3: Cross multiply
    1,285.36x = 1,927.82 × 361.02
  4. Step 4: Simplify right side
    1,285.36x = 695,981.58
  5. Step 5: Solve for x
    x = 695,981.58/1,285.36
  6. Step 6: Final answer
    x = 541.47

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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.