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Finding the Fourth Proportional to 222.19, 330.93 and 210.63

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Solution

The fourth proportional to 222.19, 330.93 and 210.63 is: 313.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.19 : 330.93 = 210.63 : x
  2. Step 2: Convert to fraction form
    222.19/330.93 = 210.63/x
  3. Step 3: Cross multiply
    222.19x = 330.93 × 210.63
  4. Step 4: Simplify right side
    222.19x = 69,702.13
  5. Step 5: Solve for x
    x = 69,702.13/222.19
  6. Step 6: Final answer
    x = 313.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.