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Finding the Fourth Proportional to 201.49, 302.40 and 152.75

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Solution

The fourth proportional to 201.49, 302.40 and 152.75 is: 229.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.49 : 302.40 = 152.75 : x
  2. Step 2: Convert to fraction form
    201.49/302.40 = 152.75/x
  3. Step 3: Cross multiply
    201.49x = 302.40 × 152.75
  4. Step 4: Simplify right side
    201.49x = 46,192.36
  5. Step 5: Solve for x
    x = 46,192.36/201.49
  6. Step 6: Final answer
    x = 229.26

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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.