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Finding the Fourth Proportional to 114.98, 171.63 and 114.71

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Solution

The fourth proportional to 114.98, 171.63 and 114.71 is: 171.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.98 : 171.63 = 114.71 : x
  2. Step 2: Convert to fraction form
    114.98/171.63 = 114.71/x
  3. Step 3: Cross multiply
    114.98x = 171.63 × 114.71
  4. Step 4: Simplify right side
    114.98x = 19,686.82
  5. Step 5: Solve for x
    x = 19,686.82/114.98
  6. Step 6: Final answer
    x = 171.23

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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.