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Finding the Fourth Proportional to 345.92, 477.36 and 190.67

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Solution

The fourth proportional to 345.92, 477.36 and 190.67 is: 263.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.92 : 477.36 = 190.67 : x
  2. Step 2: Convert to fraction form
    345.92/477.36 = 190.67/x
  3. Step 3: Cross multiply
    345.92x = 477.36 × 190.67
  4. Step 4: Simplify right side
    345.92x = 91,015.84
  5. Step 5: Solve for x
    x = 91,015.84/345.92
  6. Step 6: Final answer
    x = 263.12

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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.