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Finding the Fourth Proportional to 1,074.81, 1,610.25 and 902.58

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Solution

The fourth proportional to 1,074.81, 1,610.25 and 902.58 is: 1,352.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,074.81 : 1,610.25 = 902.58 : x
  2. Step 2: Convert to fraction form
    1,074.81/1,610.25 = 902.58/x
  3. Step 3: Cross multiply
    1,074.81x = 1,610.25 × 902.58
  4. Step 4: Simplify right side
    1,074.81x = 1,453,379.45
  5. Step 5: Solve for x
    x = 1,453,379.45/1,074.81
  6. Step 6: Final answer
    x = 1,352.22

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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.