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Finding the Fourth Proportional to 556.02, 833.90 and 231.21

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Solution

The fourth proportional to 556.02, 833.90 and 231.21 is: 346.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.02 : 833.90 = 231.21 : x
  2. Step 2: Convert to fraction form
    556.02/833.90 = 231.21/x
  3. Step 3: Cross multiply
    556.02x = 833.90 × 231.21
  4. Step 4: Simplify right side
    556.02x = 192,804.86
  5. Step 5: Solve for x
    x = 192,804.86/556.02
  6. Step 6: Final answer
    x = 346.76

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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.