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Finding the Fourth Proportional to 302.04, 416.87 and 208.75

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Solution

The fourth proportional to 302.04, 416.87 and 208.75 is: 288.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.04 : 416.87 = 208.75 : x
  2. Step 2: Convert to fraction form
    302.04/416.87 = 208.75/x
  3. Step 3: Cross multiply
    302.04x = 416.87 × 208.75
  4. Step 4: Simplify right side
    302.04x = 87,021.61
  5. Step 5: Solve for x
    x = 87,021.61/302.04
  6. Step 6: Final answer
    x = 288.11

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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.