Home / 1,022.29-1,532.93-319.39

Finding the Fourth Proportional to 1,022.29, 1,532.93 and 319.39

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Solution

The fourth proportional to 1,022.29, 1,532.93 and 319.39 is: 478.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,022.29 : 1,532.93 = 319.39 : x
  2. Step 2: Convert to fraction form
    1,022.29/1,532.93 = 319.39/x
  3. Step 3: Cross multiply
    1,022.29x = 1,532.93 × 319.39
  4. Step 4: Simplify right side
    1,022.29x = 489,597.08
  5. Step 5: Solve for x
    x = 489,597.08/1,022.29
  6. Step 6: Final answer
    x = 478.92

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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.