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Finding the Fourth Proportional to 114.49, 157.99 and 62.74

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Solution

The fourth proportional to 114.49, 157.99 and 62.74 is: 86.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.49 : 157.99 = 62.74 : x
  2. Step 2: Convert to fraction form
    114.49/157.99 = 62.74/x
  3. Step 3: Cross multiply
    114.49x = 157.99 × 62.74
  4. Step 4: Simplify right side
    114.49x = 9,912.29
  5. Step 5: Solve for x
    x = 9,912.29/114.49
  6. Step 6: Final answer
    x = 86.58

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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.