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Finding the Fourth Proportional to 285.99, 429.47 and 247.73

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Solution

The fourth proportional to 285.99, 429.47 and 247.73 is: 372.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    285.99 : 429.47 = 247.73 : x
  2. Step 2: Convert to fraction form
    285.99/429.47 = 247.73/x
  3. Step 3: Cross multiply
    285.99x = 429.47 × 247.73
  4. Step 4: Simplify right side
    285.99x = 106,389.22
  5. Step 5: Solve for x
    x = 106,389.22/285.99
  6. Step 6: Final answer
    x = 372.00

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Why These Related Problems?

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