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Finding the Fourth Proportional to 555.90, 834.03 and 339.54

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Solution

The fourth proportional to 555.90, 834.03 and 339.54 is: 509.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.90 : 834.03 = 339.54 : x
  2. Step 2: Convert to fraction form
    555.90/834.03 = 339.54/x
  3. Step 3: Cross multiply
    555.90x = 834.03 × 339.54
  4. Step 4: Simplify right side
    555.90x = 283,186.55
  5. Step 5: Solve for x
    x = 283,186.55/555.90
  6. Step 6: Final answer
    x = 509.42

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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.