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Finding the Fourth Proportional to 1,640.52, 2,263.92 and 1,051.40

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Solution

The fourth proportional to 1,640.52, 2,263.92 and 1,051.40 is: 1,450.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.52 : 2,263.92 = 1,051.40 : x
  2. Step 2: Convert to fraction form
    1,640.52/2,263.92 = 1,051.40/x
  3. Step 3: Cross multiply
    1,640.52x = 2,263.92 × 1,051.40
  4. Step 4: Simplify right side
    1,640.52x = 2,380,283.34
  5. Step 5: Solve for x
    x = 2,380,283.34/1,640.52
  6. Step 6: Final answer
    x = 1,450.93

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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.