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Finding the Fourth Proportional to 270.83, 373.92 and 208.55

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Solution

The fourth proportional to 270.83, 373.92 and 208.55 is: 287.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.83 : 373.92 = 208.55 : x
  2. Step 2: Convert to fraction form
    270.83/373.92 = 208.55/x
  3. Step 3: Cross multiply
    270.83x = 373.92 × 208.55
  4. Step 4: Simplify right side
    270.83x = 77,978.10
  5. Step 5: Solve for x
    x = 77,978.10/270.83
  6. Step 6: Final answer
    x = 287.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.