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Finding the Fourth Proportional to 346.24, 518.88 and 208.96

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Solution

The fourth proportional to 346.24, 518.88 and 208.96 is: 313.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.24 : 518.88 = 208.96 : x
  2. Step 2: Convert to fraction form
    346.24/518.88 = 208.96/x
  3. Step 3: Cross multiply
    346.24x = 518.88 × 208.96
  4. Step 4: Simplify right side
    346.24x = 108,425.16
  5. Step 5: Solve for x
    x = 108,425.16/346.24
  6. Step 6: Final answer
    x = 313.15

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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.