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Finding the Fourth Proportional to 536.44, 740.30 and 300.40

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Solution

The fourth proportional to 536.44, 740.30 and 300.40 is: 414.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.44 : 740.30 = 300.40 : x
  2. Step 2: Convert to fraction form
    536.44/740.30 = 300.40/x
  3. Step 3: Cross multiply
    536.44x = 740.30 × 300.40
  4. Step 4: Simplify right side
    536.44x = 222,386.12
  5. Step 5: Solve for x
    x = 222,386.12/536.44
  6. Step 6: Final answer
    x = 414.56

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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.