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Finding the Fourth Proportional to 306.62, 423.11 and 175.60

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Solution

The fourth proportional to 306.62, 423.11 and 175.60 is: 242.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.62 : 423.11 = 175.60 : x
  2. Step 2: Convert to fraction form
    306.62/423.11 = 175.60/x
  3. Step 3: Cross multiply
    306.62x = 423.11 × 175.60
  4. Step 4: Simplify right side
    306.62x = 74,298.12
  5. Step 5: Solve for x
    x = 74,298.12/306.62
  6. Step 6: Final answer
    x = 242.31

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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.