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Finding the Fourth Proportional to 1,016.25, 1,525.00 and 399.85

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Solution

The fourth proportional to 1,016.25, 1,525.00 and 399.85 is: 600.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,016.25 : 1,525.00 = 399.85 : x
  2. Step 2: Convert to fraction form
    1,016.25/1,525.00 = 399.85/x
  3. Step 3: Cross multiply
    1,016.25x = 1,525.00 × 399.85
  4. Step 4: Simplify right side
    1,016.25x = 609,761.63
  5. Step 5: Solve for x
    x = 609,761.63/1,016.25
  6. Step 6: Final answer
    x = 600.01

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.