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Finding the Fourth Proportional to 107.51, 148.33 and 70.70

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Solution

The fourth proportional to 107.51, 148.33 and 70.70 is: 97.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.51 : 148.33 = 70.70 : x
  2. Step 2: Convert to fraction form
    107.51/148.33 = 70.70/x
  3. Step 3: Cross multiply
    107.51x = 148.33 × 70.70
  4. Step 4: Simplify right side
    107.51x = 10,485.84
  5. Step 5: Solve for x
    x = 10,485.84/107.51
  6. Step 6: Final answer
    x = 97.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.