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Finding the Fourth Proportional to 219.26, 302.59 and 130.81

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Solution

The fourth proportional to 219.26, 302.59 and 130.81 is: 180.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.26 : 302.59 = 130.81 : x
  2. Step 2: Convert to fraction form
    219.26/302.59 = 130.81/x
  3. Step 3: Cross multiply
    219.26x = 302.59 × 130.81
  4. Step 4: Simplify right side
    219.26x = 39,579.63
  5. Step 5: Solve for x
    x = 39,579.63/219.26
  6. Step 6: Final answer
    x = 180.52

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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.