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Finding the Fourth Proportional to 202.55, 303.84 and 65.59

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Solution

The fourth proportional to 202.55, 303.84 and 65.59 is: 98.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.55 : 303.84 = 65.59 : x
  2. Step 2: Convert to fraction form
    202.55/303.84 = 65.59/x
  3. Step 3: Cross multiply
    202.55x = 303.84 × 65.59
  4. Step 4: Simplify right side
    202.55x = 19,929.25
  5. Step 5: Solve for x
    x = 19,929.25/202.55
  6. Step 6: Final answer
    x = 98.39

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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.