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Finding the Fourth Proportional to 255.37, 352.08 and 210.95

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Solution

The fourth proportional to 255.37, 352.08 and 210.95 is: 290.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.37 : 352.08 = 210.95 : x
  2. Step 2: Convert to fraction form
    255.37/352.08 = 210.95/x
  3. Step 3: Cross multiply
    255.37x = 352.08 × 210.95
  4. Step 4: Simplify right side
    255.37x = 74,271.28
  5. Step 5: Solve for x
    x = 74,271.28/255.37
  6. Step 6: Final answer
    x = 290.84

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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.