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Finding the Fourth Proportional to 65.68, 97.94 and 56.56

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Solution

The fourth proportional to 65.68, 97.94 and 56.56 is: 84.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.68 : 97.94 = 56.56 : x
  2. Step 2: Convert to fraction form
    65.68/97.94 = 56.56/x
  3. Step 3: Cross multiply
    65.68x = 97.94 × 56.56
  4. Step 4: Simplify right side
    65.68x = 5,539.49
  5. Step 5: Solve for x
    x = 5,539.49/65.68
  6. Step 6: Final answer
    x = 84.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.