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Finding the Fourth Proportional to 219.35, 302.73 and 145.82

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Solution

The fourth proportional to 219.35, 302.73 and 145.82 is: 201.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.35 : 302.73 = 145.82 : x
  2. Step 2: Convert to fraction form
    219.35/302.73 = 145.82/x
  3. Step 3: Cross multiply
    219.35x = 302.73 × 145.82
  4. Step 4: Simplify right side
    219.35x = 44,142.57
  5. Step 5: Solve for x
    x = 44,142.57/219.35
  6. Step 6: Final answer
    x = 201.25

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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.