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Finding the Fourth Proportional to 1,297.53, 1,790.59 and 738.00

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Solution

The fourth proportional to 1,297.53, 1,790.59 and 738.00 is: 1,018.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297.53 : 1,790.59 = 738.00 : x
  2. Step 2: Convert to fraction form
    1,297.53/1,790.59 = 738.00/x
  3. Step 3: Cross multiply
    1,297.53x = 1,790.59 × 738.00
  4. Step 4: Simplify right side
    1,297.53x = 1,321,452.85
  5. Step 5: Solve for x
    x = 1,321,452.85/1,297.53
  6. Step 6: Final answer
    x = 1,018.44

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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.