Home / 1,020.89-1,531.32-251.39

Finding the Fourth Proportional to 1,020.89, 1,531.32 and 251.39

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Solution

The fourth proportional to 1,020.89, 1,531.32 and 251.39 is: 377.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020.89 : 1,531.32 = 251.39 : x
  2. Step 2: Convert to fraction form
    1,020.89/1,531.32 = 251.39/x
  3. Step 3: Cross multiply
    1,020.89x = 1,531.32 × 251.39
  4. Step 4: Simplify right side
    1,020.89x = 384,958.53
  5. Step 5: Solve for x
    x = 384,958.53/1,020.89
  6. Step 6: Final answer
    x = 377.08

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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.