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Finding the Fourth Proportional to 605.54, 835.56 and 339.98

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Solution

The fourth proportional to 605.54, 835.56 and 339.98 is: 469.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.54 : 835.56 = 339.98 : x
  2. Step 2: Convert to fraction form
    605.54/835.56 = 339.98/x
  3. Step 3: Cross multiply
    605.54x = 835.56 × 339.98
  4. Step 4: Simplify right side
    605.54x = 284,073.69
  5. Step 5: Solve for x
    x = 284,073.69/605.54
  6. Step 6: Final answer
    x = 469.12

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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.