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Finding the Fourth Proportional to 1,019.50, 1,405.02 and 941.08

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Solution

The fourth proportional to 1,019.50, 1,405.02 and 941.08 is: 1,296.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019.50 : 1,405.02 = 941.08 : x
  2. Step 2: Convert to fraction form
    1,019.50/1,405.02 = 941.08/x
  3. Step 3: Cross multiply
    1,019.50x = 1,405.02 × 941.08
  4. Step 4: Simplify right side
    1,019.50x = 1,322,236.22
  5. Step 5: Solve for x
    x = 1,322,236.22/1,019.50
  6. Step 6: Final answer
    x = 1,296.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.