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Finding the Fourth Proportional to 302.88, 417.76 and 265.96

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Solution

The fourth proportional to 302.88, 417.76 and 265.96 is: 366.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.88 : 417.76 = 265.96 : x
  2. Step 2: Convert to fraction form
    302.88/417.76 = 265.96/x
  3. Step 3: Cross multiply
    302.88x = 417.76 × 265.96
  4. Step 4: Simplify right side
    302.88x = 111,107.45
  5. Step 5: Solve for x
    x = 111,107.45/302.88
  6. Step 6: Final answer
    x = 366.84

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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.