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Finding the Fourth Proportional to 154.36, 211.63 and 151.63

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Solution

The fourth proportional to 154.36, 211.63 and 151.63 is: 207.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.36 : 211.63 = 151.63 : x
  2. Step 2: Convert to fraction form
    154.36/211.63 = 151.63/x
  3. Step 3: Cross multiply
    154.36x = 211.63 × 151.63
  4. Step 4: Simplify right side
    154.36x = 32,088.70
  5. Step 5: Solve for x
    x = 32,088.70/154.36
  6. Step 6: Final answer
    x = 207.88

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.