Home / 1,286.01-1,929.12-361.58

Finding the Fourth Proportional to 1,286.01, 1,929.12 and 361.58

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Solution

The fourth proportional to 1,286.01, 1,929.12 and 361.58 is: 542.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286.01 : 1,929.12 = 361.58 : x
  2. Step 2: Convert to fraction form
    1,286.01/1,929.12 = 361.58/x
  3. Step 3: Cross multiply
    1,286.01x = 1,929.12 × 361.58
  4. Step 4: Simplify right side
    1,286.01x = 697,531.21
  5. Step 5: Solve for x
    x = 697,531.21/1,286.01
  6. Step 6: Final answer
    x = 542.40

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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.