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Finding the Fourth Proportional to 306.60, 422.93 and 175.59

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Solution

The fourth proportional to 306.60, 422.93 and 175.59 is: 242.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.60 : 422.93 = 175.59 : x
  2. Step 2: Convert to fraction form
    306.60/422.93 = 175.59/x
  3. Step 3: Cross multiply
    306.60x = 422.93 × 175.59
  4. Step 4: Simplify right side
    306.60x = 74,261.40
  5. Step 5: Solve for x
    x = 74,261.40/306.60
  6. Step 6: Final answer
    x = 242.21

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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.