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Finding the Fourth Proportional to 2,300.56, 3,450.60 and 657

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Solution

The fourth proportional to 2,300.56, 3,450.60 and 657 is: 985.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,300.56 : 3,450.60 = 657 : x
  2. Step 2: Convert to fraction form
    2,300.56/3,450.60 = 657/x
  3. Step 3: Cross multiply
    2,300.56x = 3,450.60 × 657
  4. Step 4: Simplify right side
    2,300.56x = 2,267,044.20
  5. Step 5: Solve for x
    x = 2,267,044.20/2,300.56
  6. Step 6: Final answer
    x = 985.43

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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.