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Finding the Fourth Proportional to 285.24, 427.38 and 176.70

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Solution

The fourth proportional to 285.24, 427.38 and 176.70 is: 264.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    285.24 : 427.38 = 176.70 : x
  2. Step 2: Convert to fraction form
    285.24/427.38 = 176.70/x
  3. Step 3: Cross multiply
    285.24x = 427.38 × 176.70
  4. Step 4: Simplify right side
    285.24x = 75,518.05
  5. Step 5: Solve for x
    x = 75,518.05/285.24
  6. Step 6: Final answer
    x = 264.75

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.