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Finding the Fourth Proportional to 280.34, 387.03 and 214.01

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Solution

The fourth proportional to 280.34, 387.03 and 214.01 is: 295.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    280.34 : 387.03 = 214.01 : x
  2. Step 2: Convert to fraction form
    280.34/387.03 = 214.01/x
  3. Step 3: Cross multiply
    280.34x = 387.03 × 214.01
  4. Step 4: Simplify right side
    280.34x = 82,828.29
  5. Step 5: Solve for x
    x = 82,828.29/280.34
  6. Step 6: Final answer
    x = 295.46

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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.