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Finding the Fourth Proportional to 146.04, 218.91 and 100.40

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Solution

The fourth proportional to 146.04, 218.91 and 100.40 is: 150.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.04 : 218.91 = 100.40 : x
  2. Step 2: Convert to fraction form
    146.04/218.91 = 100.40/x
  3. Step 3: Cross multiply
    146.04x = 218.91 × 100.40
  4. Step 4: Simplify right side
    146.04x = 21,977.47
  5. Step 5: Solve for x
    x = 21,977.47/146.04
  6. Step 6: Final answer
    x = 150.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.