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Finding the Fourth Proportional to 154.08, 231.03 and 51.35

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Solution

The fourth proportional to 154.08, 231.03 and 51.35 is: 76.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.08 : 231.03 = 51.35 : x
  2. Step 2: Convert to fraction form
    154.08/231.03 = 51.35/x
  3. Step 3: Cross multiply
    154.08x = 231.03 × 51.35
  4. Step 4: Simplify right side
    154.08x = 11,862.24
  5. Step 5: Solve for x
    x = 11,862.24/154.08
  6. Step 6: Final answer
    x = 76.99

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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.