Home / 1,033.55-1,550.40-621.80

Finding the Fourth Proportional to 1,033.55, 1,550.40 and 621.80

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Solution

The fourth proportional to 1,033.55, 1,550.40 and 621.80 is: 932.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,033.55 : 1,550.40 = 621.80 : x
  2. Step 2: Convert to fraction form
    1,033.55/1,550.40 = 621.80/x
  3. Step 3: Cross multiply
    1,033.55x = 1,550.40 × 621.80
  4. Step 4: Simplify right side
    1,033.55x = 964,038.72
  5. Step 5: Solve for x
    x = 964,038.72/1,033.55
  6. Step 6: Final answer
    x = 932.75

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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.