Home / 1,020.15-1,528.20-586.80

Finding the Fourth Proportional to 1,020.15, 1,528.20 and 586.80

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Solution

The fourth proportional to 1,020.15, 1,528.20 and 586.80 is: 879.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020.15 : 1,528.20 = 586.80 : x
  2. Step 2: Convert to fraction form
    1,020.15/1,528.20 = 586.80/x
  3. Step 3: Cross multiply
    1,020.15x = 1,528.20 × 586.80
  4. Step 4: Simplify right side
    1,020.15x = 896,747.76
  5. Step 5: Solve for x
    x = 896,747.76/1,020.15
  6. Step 6: Final answer
    x = 879.04

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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.