Home / 1,314.09-1,971.13-340.20

Finding the Fourth Proportional to 1,314.09, 1,971.13 and 340.20

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Solution

The fourth proportional to 1,314.09, 1,971.13 and 340.20 is: 510.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314.09 : 1,971.13 = 340.20 : x
  2. Step 2: Convert to fraction form
    1,314.09/1,971.13 = 340.20/x
  3. Step 3: Cross multiply
    1,314.09x = 1,971.13 × 340.20
  4. Step 4: Simplify right side
    1,314.09x = 670,568.57
  5. Step 5: Solve for x
    x = 670,568.57/1,314.09
  6. Step 6: Final answer
    x = 510.29

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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.