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Finding the Fourth Proportional to 556.95, 835.11 and 392.34

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Solution

The fourth proportional to 556.95, 835.11 and 392.34 is: 588.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.95 : 835.11 = 392.34 : x
  2. Step 2: Convert to fraction form
    556.95/835.11 = 392.34/x
  3. Step 3: Cross multiply
    556.95x = 835.11 × 392.34
  4. Step 4: Simplify right side
    556.95x = 327,647.06
  5. Step 5: Solve for x
    x = 327,647.06/556.95
  6. Step 6: Final answer
    x = 588.29

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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.