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Finding the Fourth Proportional to 506.39, 760.74 and 437.21

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Solution

The fourth proportional to 506.39, 760.74 and 437.21 is: 656.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.39 : 760.74 = 437.21 : x
  2. Step 2: Convert to fraction form
    506.39/760.74 = 437.21/x
  3. Step 3: Cross multiply
    506.39x = 760.74 × 437.21
  4. Step 4: Simplify right side
    506.39x = 332,603.14
  5. Step 5: Solve for x
    x = 332,603.14/506.39
  6. Step 6: Final answer
    x = 656.81

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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.