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Finding the Fourth Proportional to 556.61, 835.22 and 351.28

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Solution

The fourth proportional to 556.61, 835.22 and 351.28 is: 527.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.61 : 835.22 = 351.28 : x
  2. Step 2: Convert to fraction form
    556.61/835.22 = 351.28/x
  3. Step 3: Cross multiply
    556.61x = 835.22 × 351.28
  4. Step 4: Simplify right side
    556.61x = 293,394.87
  5. Step 5: Solve for x
    x = 293,394.87/556.61
  6. Step 6: Final answer
    x = 527.11

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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.