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Finding the Fourth Proportional to 280.33, 417.51 and 277.13

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Solution

The fourth proportional to 280.33, 417.51 and 277.13 is: 412.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    280.33 : 417.51 = 277.13 : x
  2. Step 2: Convert to fraction form
    280.33/417.51 = 277.13/x
  3. Step 3: Cross multiply
    280.33x = 417.51 × 277.13
  4. Step 4: Simplify right side
    280.33x = 115,705.59
  5. Step 5: Solve for x
    x = 115,705.59/280.33
  6. Step 6: Final answer
    x = 412.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.