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Finding the Fourth Proportional to 1,753.80, 2,630.76 and 455.26

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Solution

The fourth proportional to 1,753.80, 2,630.76 and 455.26 is: 682.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,753.80 : 2,630.76 = 455.26 : x
  2. Step 2: Convert to fraction form
    1,753.80/2,630.76 = 455.26/x
  3. Step 3: Cross multiply
    1,753.80x = 2,630.76 × 455.26
  4. Step 4: Simplify right side
    1,753.80x = 1,197,679.80
  5. Step 5: Solve for x
    x = 1,197,679.80/1,753.80
  6. Step 6: Final answer
    x = 682.91

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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.