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Finding the Fourth Proportional to 555.78, 833.11 and 267.06

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Solution

The fourth proportional to 555.78, 833.11 and 267.06 is: 400.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.78 : 833.11 = 267.06 : x
  2. Step 2: Convert to fraction form
    555.78/833.11 = 267.06/x
  3. Step 3: Cross multiply
    555.78x = 833.11 × 267.06
  4. Step 4: Simplify right side
    555.78x = 222,490.36
  5. Step 5: Solve for x
    x = 222,490.36/555.78
  6. Step 6: Final answer
    x = 400.32

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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.