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Finding the Fourth Proportional to 425.66, 634.91 and 364.37

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Solution

The fourth proportional to 425.66, 634.91 and 364.37 is: 543.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.66 : 634.91 = 364.37 : x
  2. Step 2: Convert to fraction form
    425.66/634.91 = 364.37/x
  3. Step 3: Cross multiply
    425.66x = 634.91 × 364.37
  4. Step 4: Simplify right side
    425.66x = 231,337.16
  5. Step 5: Solve for x
    x = 231,337.16/425.66
  6. Step 6: Final answer
    x = 543.49

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.