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Finding the Fourth Proportional to 282.81, 423.85 and 204.99

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Solution

The fourth proportional to 282.81, 423.85 and 204.99 is: 307.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    282.81 : 423.85 = 204.99 : x
  2. Step 2: Convert to fraction form
    282.81/423.85 = 204.99/x
  3. Step 3: Cross multiply
    282.81x = 423.85 × 204.99
  4. Step 4: Simplify right side
    282.81x = 86,881.87
  5. Step 5: Solve for x
    x = 86,881.87/282.81
  6. Step 6: Final answer
    x = 307.21

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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.