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Finding the Fourth Proportional to 1,104.83, 1,656.02 and 455.21

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Solution

The fourth proportional to 1,104.83, 1,656.02 and 455.21 is: 682.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,104.83 : 1,656.02 = 455.21 : x
  2. Step 2: Convert to fraction form
    1,104.83/1,656.02 = 455.21/x
  3. Step 3: Cross multiply
    1,104.83x = 1,656.02 × 455.21
  4. Step 4: Simplify right side
    1,104.83x = 753,829.72
  5. Step 5: Solve for x
    x = 753,829.72/1,104.83
  6. Step 6: Final answer
    x = 682.31

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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.