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Finding the Fourth Proportional to 280.04, 389.14 and 277.07

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Solution

The fourth proportional to 280.04, 389.14 and 277.07 is: 385.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    280.04 : 389.14 = 277.07 : x
  2. Step 2: Convert to fraction form
    280.04/389.14 = 277.07/x
  3. Step 3: Cross multiply
    280.04x = 389.14 × 277.07
  4. Step 4: Simplify right side
    280.04x = 107,817.63
  5. Step 5: Solve for x
    x = 107,817.63/280.04
  6. Step 6: Final answer
    x = 385.01

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.