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Finding the Fourth Proportional to 219.85, 303.04 and 170.74

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Solution

The fourth proportional to 219.85, 303.04 and 170.74 is: 235.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.85 : 303.04 = 170.74 : x
  2. Step 2: Convert to fraction form
    219.85/303.04 = 170.74/x
  3. Step 3: Cross multiply
    219.85x = 303.04 × 170.74
  4. Step 4: Simplify right side
    219.85x = 51,741.64
  5. Step 5: Solve for x
    x = 51,741.64/219.85
  6. Step 6: Final answer
    x = 235.35

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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.