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Finding the Fourth Proportional to 146.97, 218.88 and 145.35

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Solution

The fourth proportional to 146.97, 218.88 and 145.35 is: 216.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.97 : 218.88 = 145.35 : x
  2. Step 2: Convert to fraction form
    146.97/218.88 = 145.35/x
  3. Step 3: Cross multiply
    146.97x = 218.88 × 145.35
  4. Step 4: Simplify right side
    146.97x = 31,814.21
  5. Step 5: Solve for x
    x = 31,814.21/146.97
  6. Step 6: Final answer
    x = 216.47

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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.