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Finding the Fourth Proportional to 146.64, 218.64 and 141.24

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Solution

The fourth proportional to 146.64, 218.64 and 141.24 is: 210.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.64 : 218.64 = 141.24 : x
  2. Step 2: Convert to fraction form
    146.64/218.64 = 141.24/x
  3. Step 3: Cross multiply
    146.64x = 218.64 × 141.24
  4. Step 4: Simplify right side
    146.64x = 30,880.71
  5. Step 5: Solve for x
    x = 30,880.71/146.64
  6. Step 6: Final answer
    x = 210.59

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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.