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Finding the Fourth Proportional to 555.78, 833.26 and 190.47

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Solution

The fourth proportional to 555.78, 833.26 and 190.47 is: 285.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.78 : 833.26 = 190.47 : x
  2. Step 2: Convert to fraction form
    555.78/833.26 = 190.47/x
  3. Step 3: Cross multiply
    555.78x = 833.26 × 190.47
  4. Step 4: Simplify right side
    555.78x = 158,711.03
  5. Step 5: Solve for x
    x = 158,711.03/555.78
  6. Step 6: Final answer
    x = 285.56

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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.