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Finding the Fourth Proportional to 302.78, 417.58 and 232.82

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Solution

The fourth proportional to 302.78, 417.58 and 232.82 is: 321.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.78 : 417.58 = 232.82 : x
  2. Step 2: Convert to fraction form
    302.78/417.58 = 232.82/x
  3. Step 3: Cross multiply
    302.78x = 417.58 × 232.82
  4. Step 4: Simplify right side
    302.78x = 97,220.98
  5. Step 5: Solve for x
    x = 97,220.98/302.78
  6. Step 6: Final answer
    x = 321.09

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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.