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Finding the Fourth Proportional to 649.23, 895.38 and 439.35

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Solution

The fourth proportional to 649.23, 895.38 and 439.35 is: 605.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.23 : 895.38 = 439.35 : x
  2. Step 2: Convert to fraction form
    649.23/895.38 = 439.35/x
  3. Step 3: Cross multiply
    649.23x = 895.38 × 439.35
  4. Step 4: Simplify right side
    649.23x = 393,385.20
  5. Step 5: Solve for x
    x = 393,385.20/649.23
  6. Step 6: Final answer
    x = 605.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.