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Finding the Fourth Proportional to 153.01, 228.40 and 134.79

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Solution

The fourth proportional to 153.01, 228.40 and 134.79 is: 201.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.01 : 228.40 = 134.79 : x
  2. Step 2: Convert to fraction form
    153.01/228.40 = 134.79/x
  3. Step 3: Cross multiply
    153.01x = 228.40 × 134.79
  4. Step 4: Simplify right side
    153.01x = 30,786.04
  5. Step 5: Solve for x
    x = 30,786.04/153.01
  6. Step 6: Final answer
    x = 201.20

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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.