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Finding the Fourth Proportional to 154.62, 231.31 and 130.01

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Solution

The fourth proportional to 154.62, 231.31 and 130.01 is: 194.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.62 : 231.31 = 130.01 : x
  2. Step 2: Convert to fraction form
    154.62/231.31 = 130.01/x
  3. Step 3: Cross multiply
    154.62x = 231.31 × 130.01
  4. Step 4: Simplify right side
    154.62x = 30,071.96
  5. Step 5: Solve for x
    x = 30,071.96/154.62
  6. Step 6: Final answer
    x = 194.50

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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.