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Finding the Fourth Proportional to 192.84, 287.95 and 151.80

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Solution

The fourth proportional to 192.84, 287.95 and 151.80 is: 226.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.84 : 287.95 = 151.80 : x
  2. Step 2: Convert to fraction form
    192.84/287.95 = 151.80/x
  3. Step 3: Cross multiply
    192.84x = 287.95 × 151.80
  4. Step 4: Simplify right side
    192.84x = 43,710.81
  5. Step 5: Solve for x
    x = 43,710.81/192.84
  6. Step 6: Final answer
    x = 226.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.