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Finding the Fourth Proportional to 162.36, 243.52 and 46.80

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Solution

The fourth proportional to 162.36, 243.52 and 46.80 is: 70.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.36 : 243.52 = 46.80 : x
  2. Step 2: Convert to fraction form
    162.36/243.52 = 46.80/x
  3. Step 3: Cross multiply
    162.36x = 243.52 × 46.80
  4. Step 4: Simplify right side
    162.36x = 11,396.74
  5. Step 5: Solve for x
    x = 11,396.74/162.36
  6. Step 6: Final answer
    x = 70.19

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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.