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Finding the Fourth Proportional to 312.01, 468.11 and 95.61

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Solution

The fourth proportional to 312.01, 468.11 and 95.61 is: 143.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    312.01 : 468.11 = 95.61 : x
  2. Step 2: Convert to fraction form
    312.01/468.11 = 95.61/x
  3. Step 3: Cross multiply
    312.01x = 468.11 × 95.61
  4. Step 4: Simplify right side
    312.01x = 44,756.00
  5. Step 5: Solve for x
    x = 44,756.00/312.01
  6. Step 6: Final answer
    x = 143.44

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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.