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Finding the Fourth Proportional to 1,373.49, 2,059.70 and 889.65

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Solution

The fourth proportional to 1,373.49, 2,059.70 and 889.65 is: 1,334.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,373.49 : 2,059.70 = 889.65 : x
  2. Step 2: Convert to fraction form
    1,373.49/2,059.70 = 889.65/x
  3. Step 3: Cross multiply
    1,373.49x = 2,059.70 × 889.65
  4. Step 4: Simplify right side
    1,373.49x = 1,832,407.66
  5. Step 5: Solve for x
    x = 1,832,407.66/1,373.49
  6. Step 6: Final answer
    x = 1,334.13

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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.