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Finding the Fourth Proportional to 219.76, 303.53 and 145.95

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Solution

The fourth proportional to 219.76, 303.53 and 145.95 is: 201.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.76 : 303.53 = 145.95 : x
  2. Step 2: Convert to fraction form
    219.76/303.53 = 145.95/x
  3. Step 3: Cross multiply
    219.76x = 303.53 × 145.95
  4. Step 4: Simplify right side
    219.76x = 44,300.22
  5. Step 5: Solve for x
    x = 44,300.22/219.76
  6. Step 6: Final answer
    x = 201.58

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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.