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Finding the Fourth Proportional to 282.81, 423.99 and 260.03

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Solution

The fourth proportional to 282.81, 423.99 and 260.03 is: 389.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    282.81 : 423.99 = 260.03 : x
  2. Step 2: Convert to fraction form
    282.81/423.99 = 260.03/x
  3. Step 3: Cross multiply
    282.81x = 423.99 × 260.03
  4. Step 4: Simplify right side
    282.81x = 110,248.00
  5. Step 5: Solve for x
    x = 110,248.00/282.81
  6. Step 6: Final answer
    x = 389.83

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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.