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Finding the Fourth Proportional to 162.30, 243.33 and 158.46

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Solution

The fourth proportional to 162.30, 243.33 and 158.46 is: 237.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.30 : 243.33 = 158.46 : x
  2. Step 2: Convert to fraction form
    162.30/243.33 = 158.46/x
  3. Step 3: Cross multiply
    162.30x = 243.33 × 158.46
  4. Step 4: Simplify right side
    162.30x = 38,558.07
  5. Step 5: Solve for x
    x = 38,558.07/162.30
  6. Step 6: Final answer
    x = 237.57

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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.