Home / 1,293.17-1,939.87-368.70

Finding the Fourth Proportional to 1,293.17, 1,939.87 and 368.70

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Solution

The fourth proportional to 1,293.17, 1,939.87 and 368.70 is: 553.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293.17 : 1,939.87 = 368.70 : x
  2. Step 2: Convert to fraction form
    1,293.17/1,939.87 = 368.70/x
  3. Step 3: Cross multiply
    1,293.17x = 1,939.87 × 368.70
  4. Step 4: Simplify right side
    1,293.17x = 715,233.08
  5. Step 5: Solve for x
    x = 715,233.08/1,293.17
  6. Step 6: Final answer
    x = 553.09

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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.