Home / 1,316.99-1,975.82-392.54

Finding the Fourth Proportional to 1,316.99, 1,975.82 and 392.54

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Solution

The fourth proportional to 1,316.99, 1,975.82 and 392.54 is: 588.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316.99 : 1,975.82 = 392.54 : x
  2. Step 2: Convert to fraction form
    1,316.99/1,975.82 = 392.54/x
  3. Step 3: Cross multiply
    1,316.99x = 1,975.82 × 392.54
  4. Step 4: Simplify right side
    1,316.99x = 775,591.36
  5. Step 5: Solve for x
    x = 775,591.36/1,316.99
  6. Step 6: Final answer
    x = 588.91

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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.