Home / 1,288.68-1,933.01-314.79

Finding the Fourth Proportional to 1,288.68, 1,933.01 and 314.79

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Solution

The fourth proportional to 1,288.68, 1,933.01 and 314.79 is: 472.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288.68 : 1,933.01 = 314.79 : x
  2. Step 2: Convert to fraction form
    1,288.68/1,933.01 = 314.79/x
  3. Step 3: Cross multiply
    1,288.68x = 1,933.01 × 314.79
  4. Step 4: Simplify right side
    1,288.68x = 608,490.64
  5. Step 5: Solve for x
    x = 608,490.64/1,288.68
  6. Step 6: Final answer
    x = 472.18

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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.