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Finding the Fourth Proportional to 649.45, 894.94 and 463.15

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Solution

The fourth proportional to 649.45, 894.94 and 463.15 is: 638.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.45 : 894.94 = 463.15 : x
  2. Step 2: Convert to fraction form
    649.45/894.94 = 463.15/x
  3. Step 3: Cross multiply
    649.45x = 894.94 × 463.15
  4. Step 4: Simplify right side
    649.45x = 414,491.46
  5. Step 5: Solve for x
    x = 414,491.46/649.45
  6. Step 6: Final answer
    x = 638.22

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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.