Home / 1,318.31-1,977.69-496.70

Finding the Fourth Proportional to 1,318.31, 1,977.69 and 496.70

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Solution

The fourth proportional to 1,318.31, 1,977.69 and 496.70 is: 745.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.31 : 1,977.69 = 496.70 : x
  2. Step 2: Convert to fraction form
    1,318.31/1,977.69 = 496.70/x
  3. Step 3: Cross multiply
    1,318.31x = 1,977.69 × 496.70
  4. Step 4: Simplify right side
    1,318.31x = 982,318.62
  5. Step 5: Solve for x
    x = 982,318.62/1,318.31
  6. Step 6: Final answer
    x = 745.13

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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.