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Finding the Fourth Proportional to 1,326.02, 1,990.05 and 633.02

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Solution

The fourth proportional to 1,326.02, 1,990.05 and 633.02 is: 950.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326.02 : 1,990.05 = 633.02 : x
  2. Step 2: Convert to fraction form
    1,326.02/1,990.05 = 633.02/x
  3. Step 3: Cross multiply
    1,326.02x = 1,990.05 × 633.02
  4. Step 4: Simplify right side
    1,326.02x = 1,259,741.45
  5. Step 5: Solve for x
    x = 1,259,741.45/1,326.02
  6. Step 6: Final answer
    x = 950.02

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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.