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Finding the Fourth Proportional to 605.19, 835.05 and 339.57

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Solution

The fourth proportional to 605.19, 835.05 and 339.57 is: 468.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.19 : 835.05 = 339.57 : x
  2. Step 2: Convert to fraction form
    605.19/835.05 = 339.57/x
  3. Step 3: Cross multiply
    605.19x = 835.05 × 339.57
  4. Step 4: Simplify right side
    605.19x = 283,557.93
  5. Step 5: Solve for x
    x = 283,557.93/605.19
  6. Step 6: Final answer
    x = 468.54

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1.5x scale

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.