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Finding the Fourth Proportional to 506.28, 697.77 and 469.11

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Solution

The fourth proportional to 506.28, 697.77 and 469.11 is: 646.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.28 : 697.77 = 469.11 : x
  2. Step 2: Convert to fraction form
    506.28/697.77 = 469.11/x
  3. Step 3: Cross multiply
    506.28x = 697.77 × 469.11
  4. Step 4: Simplify right side
    506.28x = 327,330.88
  5. Step 5: Solve for x
    x = 327,330.88/506.28
  6. Step 6: Final answer
    x = 646.54

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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.