Home / 1,316.91-1,975.35-495.17

Finding the Fourth Proportional to 1,316.91, 1,975.35 and 495.17

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Solution

The fourth proportional to 1,316.91, 1,975.35 and 495.17 is: 742.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316.91 : 1,975.35 = 495.17 : x
  2. Step 2: Convert to fraction form
    1,316.91/1,975.35 = 495.17/x
  3. Step 3: Cross multiply
    1,316.91x = 1,975.35 × 495.17
  4. Step 4: Simplify right side
    1,316.91x = 978,124.18
  5. Step 5: Solve for x
    x = 978,124.18/1,316.91
  6. Step 6: Final answer
    x = 742.74

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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.