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Finding the Fourth Proportional to 70.07, 96.46 and 60.80

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Solution

The fourth proportional to 70.07, 96.46 and 60.80 is: 83.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70.07 : 96.46 = 60.80 : x
  2. Step 2: Convert to fraction form
    70.07/96.46 = 60.80/x
  3. Step 3: Cross multiply
    70.07x = 96.46 × 60.80
  4. Step 4: Simplify right side
    70.07x = 5,864.77
  5. Step 5: Solve for x
    x = 5,864.77/70.07
  6. Step 6: Final answer
    x = 83.70

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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.