Home / 1,028.68-1,419.56-630.50

Finding the Fourth Proportional to 1,028.68, 1,419.56 and 630.50

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Solution

The fourth proportional to 1,028.68, 1,419.56 and 630.50 is: 870.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028.68 : 1,419.56 = 630.50 : x
  2. Step 2: Convert to fraction form
    1,028.68/1,419.56 = 630.50/x
  3. Step 3: Cross multiply
    1,028.68x = 1,419.56 × 630.50
  4. Step 4: Simplify right side
    1,028.68x = 895,032.58
  5. Step 5: Solve for x
    x = 895,032.58/1,028.68
  6. Step 6: Final answer
    x = 870.08

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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.