Home / 1,020.06-1,530.19-326.55

Finding the Fourth Proportional to 1,020.06, 1,530.19 and 326.55

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Solution

The fourth proportional to 1,020.06, 1,530.19 and 326.55 is: 489.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020.06 : 1,530.19 = 326.55 : x
  2. Step 2: Convert to fraction form
    1,020.06/1,530.19 = 326.55/x
  3. Step 3: Cross multiply
    1,020.06x = 1,530.19 × 326.55
  4. Step 4: Simplify right side
    1,020.06x = 499,689.69
  5. Step 5: Solve for x
    x = 499,689.69/1,020.06
  6. Step 6: Final answer
    x = 489.86

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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.