Home / 1,032.31-1,424.61-634.20

Finding the Fourth Proportional to 1,032.31, 1,424.61 and 634.20

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Solution

The fourth proportional to 1,032.31, 1,424.61 and 634.20 is: 875.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,032.31 : 1,424.61 = 634.20 : x
  2. Step 2: Convert to fraction form
    1,032.31/1,424.61 = 634.20/x
  3. Step 3: Cross multiply
    1,032.31x = 1,424.61 × 634.20
  4. Step 4: Simplify right side
    1,032.31x = 903,487.66
  5. Step 5: Solve for x
    x = 903,487.66/1,032.31
  6. Step 6: Final answer
    x = 875.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.