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Finding the Fourth Proportional to 894.44, 1,341.18 and 407.60

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Solution

The fourth proportional to 894.44, 1,341.18 and 407.60 is: 611.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.44 : 1,341.18 = 407.60 : x
  2. Step 2: Convert to fraction form
    894.44/1,341.18 = 407.60/x
  3. Step 3: Cross multiply
    894.44x = 1,341.18 × 407.60
  4. Step 4: Simplify right side
    894.44x = 546,664.97
  5. Step 5: Solve for x
    x = 546,664.97/894.44
  6. Step 6: Final answer
    x = 611.18

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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.