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Finding the Fourth Proportional to 552.15, 761.94 and 303.47

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Solution

The fourth proportional to 552.15, 761.94 and 303.47 is: 418.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.15 : 761.94 = 303.47 : x
  2. Step 2: Convert to fraction form
    552.15/761.94 = 303.47/x
  3. Step 3: Cross multiply
    552.15x = 761.94 × 303.47
  4. Step 4: Simplify right side
    552.15x = 231,222.12
  5. Step 5: Solve for x
    x = 231,222.12/552.15
  6. Step 6: Final answer
    x = 418.77

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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.