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Finding the Fourth Proportional to 495.34, 741.12 and 300.40

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Solution

The fourth proportional to 495.34, 741.12 and 300.40 is: 449.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.34 : 741.12 = 300.40 : x
  2. Step 2: Convert to fraction form
    495.34/741.12 = 300.40/x
  3. Step 3: Cross multiply
    495.34x = 741.12 × 300.40
  4. Step 4: Simplify right side
    495.34x = 222,632.45
  5. Step 5: Solve for x
    x = 222,632.45/495.34
  6. Step 6: Final answer
    x = 449.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.