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Finding the Fourth Proportional to 233.68, 350.40 and 148

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Solution

The fourth proportional to 233.68, 350.40 and 148 is: 221.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.68 : 350.40 = 148 : x
  2. Step 2: Convert to fraction form
    233.68/350.40 = 148/x
  3. Step 3: Cross multiply
    233.68x = 350.40 × 148
  4. Step 4: Simplify right side
    233.68x = 51,859.20
  5. Step 5: Solve for x
    x = 51,859.20/233.68
  6. Step 6: Final answer
    x = 221.92

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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.