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Finding the Fourth Proportional to 306.98, 423.59 and 175.96

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Solution

The fourth proportional to 306.98, 423.59 and 175.96 is: 242.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.98 : 423.59 = 175.96 : x
  2. Step 2: Convert to fraction form
    306.98/423.59 = 175.96/x
  3. Step 3: Cross multiply
    306.98x = 423.59 × 175.96
  4. Step 4: Simplify right side
    306.98x = 74,534.90
  5. Step 5: Solve for x
    x = 74,534.90/306.98
  6. Step 6: Final answer
    x = 242.80

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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.