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Finding the Fourth Proportional to 97.12, 145.54 and 48.96

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Solution

The fourth proportional to 97.12, 145.54 and 48.96 is: 73.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    97.12 : 145.54 = 48.96 : x
  2. Step 2: Convert to fraction form
    97.12/145.54 = 48.96/x
  3. Step 3: Cross multiply
    97.12x = 145.54 × 48.96
  4. Step 4: Simplify right side
    97.12x = 7,125.64
  5. Step 5: Solve for x
    x = 7,125.64/97.12
  6. Step 6: Final answer
    x = 73.37

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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.