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Finding the Fourth Proportional to 552.05, 761.37 and 342.08

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Solution

The fourth proportional to 552.05, 761.37 and 342.08 is: 471.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.05 : 761.37 = 342.08 : x
  2. Step 2: Convert to fraction form
    552.05/761.37 = 342.08/x
  3. Step 3: Cross multiply
    552.05x = 761.37 × 342.08
  4. Step 4: Simplify right side
    552.05x = 260,445.64
  5. Step 5: Solve for x
    x = 260,445.64/552.05
  6. Step 6: Final answer
    x = 471.78

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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.