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Finding the Fourth Proportional to 302.59, 417.55 and 169.80

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Solution

The fourth proportional to 302.59, 417.55 and 169.80 is: 234.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.59 : 417.55 = 169.80 : x
  2. Step 2: Convert to fraction form
    302.59/417.55 = 169.80/x
  3. Step 3: Cross multiply
    302.59x = 417.55 × 169.80
  4. Step 4: Simplify right side
    302.59x = 70,899.99
  5. Step 5: Solve for x
    x = 70,899.99/302.59
  6. Step 6: Final answer
    x = 234.31

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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.