Home / 1,131.30-1,697.06-400.88

Finding the Fourth Proportional to 1,131.30, 1,697.06 and 400.88

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Solution

The fourth proportional to 1,131.30, 1,697.06 and 400.88 is: 601.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131.30 : 1,697.06 = 400.88 : x
  2. Step 2: Convert to fraction form
    1,131.30/1,697.06 = 400.88/x
  3. Step 3: Cross multiply
    1,131.30x = 1,697.06 × 400.88
  4. Step 4: Simplify right side
    1,131.30x = 680,322.66
  5. Step 5: Solve for x
    x = 680,322.66/1,131.30
  6. Step 6: Final answer
    x = 601.36

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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.