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Finding the Fourth Proportional to 1,131.36, 1,697.00 and 400.52

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Solution

The fourth proportional to 1,131.36, 1,697.00 and 400.52 is: 600.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131.36 : 1,697.00 = 400.52 : x
  2. Step 2: Convert to fraction form
    1,131.36/1,697.00 = 400.52/x
  3. Step 3: Cross multiply
    1,131.36x = 1,697.00 × 400.52
  4. Step 4: Simplify right side
    1,131.36x = 679,671.95
  5. Step 5: Solve for x
    x = 679,671.95/1,131.36
  6. Step 6: Final answer
    x = 600.76

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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.