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Finding the Fourth Proportional to 649.08, 973.68 and 216.13

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Solution

The fourth proportional to 649.08, 973.68 and 216.13 is: 324.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.08 : 973.68 = 216.13 : x
  2. Step 2: Convert to fraction form
    649.08/973.68 = 216.13/x
  3. Step 3: Cross multiply
    649.08x = 973.68 × 216.13
  4. Step 4: Simplify right side
    649.08x = 210,441.46
  5. Step 5: Solve for x
    x = 210,441.46/649.08
  6. Step 6: Final answer
    x = 324.21

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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.