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Finding the Fourth Proportional to 302.63, 417.64 and 171.66

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Solution

The fourth proportional to 302.63, 417.64 and 171.66 is: 236.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.63 : 417.64 = 171.66 : x
  2. Step 2: Convert to fraction form
    302.63/417.64 = 171.66/x
  3. Step 3: Cross multiply
    302.63x = 417.64 × 171.66
  4. Step 4: Simplify right side
    302.63x = 71,690.61
  5. Step 5: Solve for x
    x = 71,690.61/302.63
  6. Step 6: Final answer
    x = 236.89

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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.