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Finding the Fourth Proportional to 895.49, 1,341.39 and 408.88

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Solution

The fourth proportional to 895.49, 1,341.39 and 408.88 is: 612.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.49 : 1,341.39 = 408.88 : x
  2. Step 2: Convert to fraction form
    895.49/1,341.39 = 408.88/x
  3. Step 3: Cross multiply
    895.49x = 1,341.39 × 408.88
  4. Step 4: Simplify right side
    895.49x = 548,470.75
  5. Step 5: Solve for x
    x = 548,470.75/895.49
  6. Step 6: Final answer
    x = 612.48

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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.