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Finding the Fourth Proportional to 162.51, 243.81 and 144.60

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Solution

The fourth proportional to 162.51, 243.81 and 144.60 is: 216.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.51 : 243.81 = 144.60 : x
  2. Step 2: Convert to fraction form
    162.51/243.81 = 144.60/x
  3. Step 3: Cross multiply
    162.51x = 243.81 × 144.60
  4. Step 4: Simplify right side
    162.51x = 35,254.93
  5. Step 5: Solve for x
    x = 35,254.93/162.51
  6. Step 6: Final answer
    x = 216.94

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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.