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Finding the Fourth Proportional to 145.73, 218.60 and 123.05

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Solution

The fourth proportional to 145.73, 218.60 and 123.05 is: 184.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.73 : 218.60 = 123.05 : x
  2. Step 2: Convert to fraction form
    145.73/218.60 = 123.05/x
  3. Step 3: Cross multiply
    145.73x = 218.60 × 123.05
  4. Step 4: Simplify right side
    145.73x = 26,899.12
  5. Step 5: Solve for x
    x = 26,899.12/145.73
  6. Step 6: Final answer
    x = 184.58

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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.