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Finding the Fourth Proportional to 68.23, 93.70 and 62.08

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Solution

The fourth proportional to 68.23, 93.70 and 62.08 is: 85.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.23 : 93.70 = 62.08 : x
  2. Step 2: Convert to fraction form
    68.23/93.70 = 62.08/x
  3. Step 3: Cross multiply
    68.23x = 93.70 × 62.08
  4. Step 4: Simplify right side
    68.23x = 5,816.93
  5. Step 5: Solve for x
    x = 5,816.93/68.23
  6. Step 6: Final answer
    x = 85.25

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.