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Finding the Fourth Proportional to 1,377.31, 2,066 and 351.31

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Solution

The fourth proportional to 1,377.31, 2,066 and 351.31 is: 526.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377.31 : 2,066 = 351.31 : x
  2. Step 2: Convert to fraction form
    1,377.31/2,066 = 351.31/x
  3. Step 3: Cross multiply
    1,377.31x = 2,066 × 351.31
  4. Step 4: Simplify right side
    1,377.31x = 725,806.46
  5. Step 5: Solve for x
    x = 725,806.46/1,377.31
  6. Step 6: Final answer
    x = 526.97

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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.