Home / 1,089.25-1,503.26-623.59

Finding the Fourth Proportional to 1,089.25, 1,503.26 and 623.59

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Solution

The fourth proportional to 1,089.25, 1,503.26 and 623.59 is: 860.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089.25 : 1,503.26 = 623.59 : x
  2. Step 2: Convert to fraction form
    1,089.25/1,503.26 = 623.59/x
  3. Step 3: Cross multiply
    1,089.25x = 1,503.26 × 623.59
  4. Step 4: Simplify right side
    1,089.25x = 937,417.90
  5. Step 5: Solve for x
    x = 937,417.90/1,089.25
  6. Step 6: Final answer
    x = 860.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.