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Finding the Fourth Proportional to 895.69, 1,343.49 and 408.73

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Solution

The fourth proportional to 895.69, 1,343.49 and 408.73 is: 613.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.69 : 1,343.49 = 408.73 : x
  2. Step 2: Convert to fraction form
    895.69/1,343.49 = 408.73/x
  3. Step 3: Cross multiply
    895.69x = 1,343.49 × 408.73
  4. Step 4: Simplify right side
    895.69x = 549,124.59
  5. Step 5: Solve for x
    x = 549,124.59/895.69
  6. Step 6: Final answer
    x = 613.08

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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.