Home / 1,314.15-1,971.06-340.17

Finding the Fourth Proportional to 1,314.15, 1,971.06 and 340.17

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Solution

The fourth proportional to 1,314.15, 1,971.06 and 340.17 is: 510.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314.15 : 1,971.06 = 340.17 : x
  2. Step 2: Convert to fraction form
    1,314.15/1,971.06 = 340.17/x
  3. Step 3: Cross multiply
    1,314.15x = 1,971.06 × 340.17
  4. Step 4: Simplify right side
    1,314.15x = 670,495.48
  5. Step 5: Solve for x
    x = 670,495.48/1,314.15
  6. Step 6: Final answer
    x = 510.21

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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.