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Finding the Fourth Proportional to 536.45, 740.20 and 300.38

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Solution

The fourth proportional to 536.45, 740.20 and 300.38 is: 414.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.45 : 740.20 = 300.38 : x
  2. Step 2: Convert to fraction form
    536.45/740.20 = 300.38/x
  3. Step 3: Cross multiply
    536.45x = 740.20 × 300.38
  4. Step 4: Simplify right side
    536.45x = 222,342.79
  5. Step 5: Solve for x
    x = 222,342.79/536.45
  6. Step 6: Final answer
    x = 414.47

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1.5x scale

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.