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Finding the Fourth Proportional to 275.01, 412.58 and 80.00

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Solution

The fourth proportional to 275.01, 412.58 and 80.00 is: 120.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.01 : 412.58 = 80.00 : x
  2. Step 2: Convert to fraction form
    275.01/412.58 = 80.00/x
  3. Step 3: Cross multiply
    275.01x = 412.58 × 80.00
  4. Step 4: Simplify right side
    275.01x = 33,006.88
  5. Step 5: Solve for x
    x = 33,006.88/275.01
  6. Step 6: Final answer
    x = 120.02

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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.