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Finding the Fourth Proportional to 282.63, 389.91 and 177.67

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Solution

The fourth proportional to 282.63, 389.91 and 177.67 is: 245.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    282.63 : 389.91 = 177.67 : x
  2. Step 2: Convert to fraction form
    282.63/389.91 = 177.67/x
  3. Step 3: Cross multiply
    282.63x = 389.91 × 177.67
  4. Step 4: Simplify right side
    282.63x = 69,275.31
  5. Step 5: Solve for x
    x = 69,275.31/282.63
  6. Step 6: Final answer
    x = 245.11

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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.