Home / 1,314.35-1,971.36-340.41

Finding the Fourth Proportional to 1,314.35, 1,971.36 and 340.41

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Solution

The fourth proportional to 1,314.35, 1,971.36 and 340.41 is: 510.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314.35 : 1,971.36 = 340.41 : x
  2. Step 2: Convert to fraction form
    1,314.35/1,971.36 = 340.41/x
  3. Step 3: Cross multiply
    1,314.35x = 1,971.36 × 340.41
  4. Step 4: Simplify right side
    1,314.35x = 671,070.66
  5. Step 5: Solve for x
    x = 671,070.66/1,314.35
  6. Step 6: Final answer
    x = 510.57

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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.