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Finding the Fourth Proportional to 273.51, 407.36 and 259.47

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Solution

The fourth proportional to 273.51, 407.36 and 259.47 is: 386.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.51 : 407.36 = 259.47 : x
  2. Step 2: Convert to fraction form
    273.51/407.36 = 259.47/x
  3. Step 3: Cross multiply
    273.51x = 407.36 × 259.47
  4. Step 4: Simplify right side
    273.51x = 105,698.35
  5. Step 5: Solve for x
    x = 105,698.35/273.51
  6. Step 6: Final answer
    x = 386.45

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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.