Home / 1,035.55-1,553.40-623.80

Finding the Fourth Proportional to 1,035.55, 1,553.40 and 623.80

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Solution

The fourth proportional to 1,035.55, 1,553.40 and 623.80 is: 935.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,035.55 : 1,553.40 = 623.80 : x
  2. Step 2: Convert to fraction form
    1,035.55/1,553.40 = 623.80/x
  3. Step 3: Cross multiply
    1,035.55x = 1,553.40 × 623.80
  4. Step 4: Simplify right side
    1,035.55x = 969,010.92
  5. Step 5: Solve for x
    x = 969,010.92/1,035.55
  6. Step 6: Final answer
    x = 935.75

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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.