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Finding the Fourth Proportional to 100.56, 149.58 and 97.54

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Solution

The fourth proportional to 100.56, 149.58 and 97.54 is: 145.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    100.56 : 149.58 = 97.54 : x
  2. Step 2: Convert to fraction form
    100.56/149.58 = 97.54/x
  3. Step 3: Cross multiply
    100.56x = 149.58 × 97.54
  4. Step 4: Simplify right side
    100.56x = 14,590.03
  5. Step 5: Solve for x
    x = 14,590.03/100.56
  6. Step 6: Final answer
    x = 145.09

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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.