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Finding the Fourth Proportional to 540.09, 744.36 and 465.21

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Solution

The fourth proportional to 540.09, 744.36 and 465.21 is: 641.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.09 : 744.36 = 465.21 : x
  2. Step 2: Convert to fraction form
    540.09/744.36 = 465.21/x
  3. Step 3: Cross multiply
    540.09x = 744.36 × 465.21
  4. Step 4: Simplify right side
    540.09x = 346,283.72
  5. Step 5: Solve for x
    x = 346,283.72/540.09
  6. Step 6: Final answer
    x = 641.16

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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.