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Finding the Fourth Proportional to 1,297.22, 1,932.72 and 1,235.30

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Solution

The fourth proportional to 1,297.22, 1,932.72 and 1,235.30 is: 1,840.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297.22 : 1,932.72 = 1,235.30 : x
  2. Step 2: Convert to fraction form
    1,297.22/1,932.72 = 1,235.30/x
  3. Step 3: Cross multiply
    1,297.22x = 1,932.72 × 1,235.30
  4. Step 4: Simplify right side
    1,297.22x = 2,387,489.02
  5. Step 5: Solve for x
    x = 2,387,489.02/1,297.22
  6. Step 6: Final answer
    x = 1,840.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.