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Finding the Fourth Proportional to 649.67, 973.91 and 238.51

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Solution

The fourth proportional to 649.67, 973.91 and 238.51 is: 357.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.67 : 973.91 = 238.51 : x
  2. Step 2: Convert to fraction form
    649.67/973.91 = 238.51/x
  3. Step 3: Cross multiply
    649.67x = 973.91 × 238.51
  4. Step 4: Simplify right side
    649.67x = 232,289.09
  5. Step 5: Solve for x
    x = 232,289.09/649.67
  6. Step 6: Final answer
    x = 357.55

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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.