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Finding the Fourth Proportional to 1,370.50, 1,889.55 and 950.11

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Solution

The fourth proportional to 1,370.50, 1,889.55 and 950.11 is: 1,309.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370.50 : 1,889.55 = 950.11 : x
  2. Step 2: Convert to fraction form
    1,370.50/1,889.55 = 950.11/x
  3. Step 3: Cross multiply
    1,370.50x = 1,889.55 × 950.11
  4. Step 4: Simplify right side
    1,370.50x = 1,795,275.63
  5. Step 5: Solve for x
    x = 1,795,275.63/1,370.50
  6. Step 6: Final answer
    x = 1,309.94

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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.