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Finding the Fourth Proportional to 1,015.98, 1,516.46 and 941.64

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Solution

The fourth proportional to 1,015.98, 1,516.46 and 941.64 is: 1,405.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015.98 : 1,516.46 = 941.64 : x
  2. Step 2: Convert to fraction form
    1,015.98/1,516.46 = 941.64/x
  3. Step 3: Cross multiply
    1,015.98x = 1,516.46 × 941.64
  4. Step 4: Simplify right side
    1,015.98x = 1,427,959.39
  5. Step 5: Solve for x
    x = 1,427,959.39/1,015.98
  6. Step 6: Final answer
    x = 1,405.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.