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Finding the Fourth Proportional to 338.55, 507.83 and 95.12

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Solution

The fourth proportional to 338.55, 507.83 and 95.12 is: 142.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.55 : 507.83 = 95.12 : x
  2. Step 2: Convert to fraction form
    338.55/507.83 = 95.12/x
  3. Step 3: Cross multiply
    338.55x = 507.83 × 95.12
  4. Step 4: Simplify right side
    338.55x = 48,301.77
  5. Step 5: Solve for x
    x = 48,301.77/338.55
  6. Step 6: Final answer
    x = 142.67

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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.