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Finding the Fourth Proportional to 338.04, 507.20 and 208.17

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Solution

The fourth proportional to 338.04, 507.20 and 208.17 is: 312.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.04 : 507.20 = 208.17 : x
  2. Step 2: Convert to fraction form
    338.04/507.20 = 208.17/x
  3. Step 3: Cross multiply
    338.04x = 507.20 × 208.17
  4. Step 4: Simplify right side
    338.04x = 105,582.78
  5. Step 5: Solve for x
    x = 105,582.78/338.04
  6. Step 6: Final answer
    x = 312.34

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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.