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Finding the Fourth Proportional to 551.86, 761.34 and 365.56

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Solution

The fourth proportional to 551.86, 761.34 and 365.56 is: 504.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.86 : 761.34 = 365.56 : x
  2. Step 2: Convert to fraction form
    551.86/761.34 = 365.56/x
  3. Step 3: Cross multiply
    551.86x = 761.34 × 365.56
  4. Step 4: Simplify right side
    551.86x = 278,315.45
  5. Step 5: Solve for x
    x = 278,315.45/551.86
  6. Step 6: Final answer
    x = 504.32

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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.