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Finding the Fourth Proportional to 605.61, 835.68 and 340.03

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Solution

The fourth proportional to 605.61, 835.68 and 340.03 is: 469.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.61 : 835.68 = 340.03 : x
  2. Step 2: Convert to fraction form
    605.61/835.68 = 340.03/x
  3. Step 3: Cross multiply
    605.61x = 835.68 × 340.03
  4. Step 4: Simplify right side
    605.61x = 284,158.59
  5. Step 5: Solve for x
    x = 284,158.59/605.61
  6. Step 6: Final answer
    x = 469.21

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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.