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Finding the Fourth Proportional to 649.58, 973.97 and 238.64

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Solution

The fourth proportional to 649.58, 973.97 and 238.64 is: 357.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.58 : 973.97 = 238.64 : x
  2. Step 2: Convert to fraction form
    649.58/973.97 = 238.64/x
  3. Step 3: Cross multiply
    649.58x = 973.97 × 238.64
  4. Step 4: Simplify right side
    649.58x = 232,427.01
  5. Step 5: Solve for x
    x = 232,427.01/649.58
  6. Step 6: Final answer
    x = 357.81

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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.