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Finding the Fourth Proportional to 433.28, 597.87 and 278

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Solution

The fourth proportional to 433.28, 597.87 and 278 is: 383.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.28 : 597.87 = 278 : x
  2. Step 2: Convert to fraction form
    433.28/597.87 = 278/x
  3. Step 3: Cross multiply
    433.28x = 597.87 × 278
  4. Step 4: Simplify right side
    433.28x = 166,207.86
  5. Step 5: Solve for x
    x = 166,207.86/433.28
  6. Step 6: Final answer
    x = 383.60

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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.