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Finding the Fourth Proportional to 540.09, 744.55 and 400.37

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Solution

The fourth proportional to 540.09, 744.55 and 400.37 is: 551.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.09 : 744.55 = 400.37 : x
  2. Step 2: Convert to fraction form
    540.09/744.55 = 400.37/x
  3. Step 3: Cross multiply
    540.09x = 744.55 × 400.37
  4. Step 4: Simplify right side
    540.09x = 298,090.76
  5. Step 5: Solve for x
    x = 298,090.76/540.09
  6. Step 6: Final answer
    x = 551.93

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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.