Home / 1,316.74-1,975.41-439.17

Finding the Fourth Proportional to 1,316.74, 1,975.41 and 439.17

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Solution

The fourth proportional to 1,316.74, 1,975.41 and 439.17 is: 658.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316.74 : 1,975.41 = 439.17 : x
  2. Step 2: Convert to fraction form
    1,316.74/1,975.41 = 439.17/x
  3. Step 3: Cross multiply
    1,316.74x = 1,975.41 × 439.17
  4. Step 4: Simplify right side
    1,316.74x = 867,538.61
  5. Step 5: Solve for x
    x = 867,538.61/1,316.74
  6. Step 6: Final answer
    x = 658.86

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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.