Home / 1,298.66-1,948.38-605.74

Finding the Fourth Proportional to 1,298.66, 1,948.38 and 605.74

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Solution

The fourth proportional to 1,298.66, 1,948.38 and 605.74 is: 908.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298.66 : 1,948.38 = 605.74 : x
  2. Step 2: Convert to fraction form
    1,298.66/1,948.38 = 605.74/x
  3. Step 3: Cross multiply
    1,298.66x = 1,948.38 × 605.74
  4. Step 4: Simplify right side
    1,298.66x = 1,180,211.70
  5. Step 5: Solve for x
    x = 1,180,211.70/1,298.66
  6. Step 6: Final answer
    x = 908.79

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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.