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Finding the Fourth Proportional to 284.99, 393.33 and 272.00

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Solution

The fourth proportional to 284.99, 393.33 and 272.00 is: 375.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.99 : 393.33 = 272.00 : x
  2. Step 2: Convert to fraction form
    284.99/393.33 = 272.00/x
  3. Step 3: Cross multiply
    284.99x = 393.33 × 272.00
  4. Step 4: Simplify right side
    284.99x = 106,984.76
  5. Step 5: Solve for x
    x = 106,984.76/284.99
  6. Step 6: Final answer
    x = 375.40

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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.