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Finding the Fourth Proportional to 894.69, 1,342.22 and 450.20

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Solution

The fourth proportional to 894.69, 1,342.22 and 450.20 is: 675.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.69 : 1,342.22 = 450.20 : x
  2. Step 2: Convert to fraction form
    894.69/1,342.22 = 450.20/x
  3. Step 3: Cross multiply
    894.69x = 1,342.22 × 450.20
  4. Step 4: Simplify right side
    894.69x = 604,268.55
  5. Step 5: Solve for x
    x = 604,268.55/894.69
  6. Step 6: Final answer
    x = 675.39

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1.5x scale

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.