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Finding the Fourth Proportional to 131.03, 196.48 and 48.74

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Solution

The fourth proportional to 131.03, 196.48 and 48.74 is: 73.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.03 : 196.48 = 48.74 : x
  2. Step 2: Convert to fraction form
    131.03/196.48 = 48.74/x
  3. Step 3: Cross multiply
    131.03x = 196.48 × 48.74
  4. Step 4: Simplify right side
    131.03x = 9,575.51
  5. Step 5: Solve for x
    x = 9,575.51/131.03
  6. Step 6: Final answer
    x = 73.08

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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.