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Finding the Fourth Proportional to 1,104.86, 1,656.95 and 455.44

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Solution

The fourth proportional to 1,104.86, 1,656.95 and 455.44 is: 683.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,104.86 : 1,656.95 = 455.44 : x
  2. Step 2: Convert to fraction form
    1,104.86/1,656.95 = 455.44/x
  3. Step 3: Cross multiply
    1,104.86x = 1,656.95 × 455.44
  4. Step 4: Simplify right side
    1,104.86x = 754,639.03
  5. Step 5: Solve for x
    x = 754,639.03/1,104.86
  6. Step 6: Final answer
    x = 683.02

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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.