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Finding the Fourth Proportional to 280.29, 384.73 and 248.51

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Solution

The fourth proportional to 280.29, 384.73 and 248.51 is: 341.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    280.29 : 384.73 = 248.51 : x
  2. Step 2: Convert to fraction form
    280.29/384.73 = 248.51/x
  3. Step 3: Cross multiply
    280.29x = 384.73 × 248.51
  4. Step 4: Simplify right side
    280.29x = 95,609.25
  5. Step 5: Solve for x
    x = 95,609.25/280.29
  6. Step 6: Final answer
    x = 341.11

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.