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Finding the Fourth Proportional to 555.91, 833.32 and 311.91

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Solution

The fourth proportional to 555.91, 833.32 and 311.91 is: 467.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.91 : 833.32 = 311.91 : x
  2. Step 2: Convert to fraction form
    555.91/833.32 = 311.91/x
  3. Step 3: Cross multiply
    555.91x = 833.32 × 311.91
  4. Step 4: Simplify right side
    555.91x = 259,920.84
  5. Step 5: Solve for x
    x = 259,920.84/555.91
  6. Step 6: Final answer
    x = 467.56

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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.