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Finding the Fourth Proportional to 557.39, 836.80 and 454.87

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Solution

The fourth proportional to 557.39, 836.80 and 454.87 is: 682.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.39 : 836.80 = 454.87 : x
  2. Step 2: Convert to fraction form
    557.39/836.80 = 454.87/x
  3. Step 3: Cross multiply
    557.39x = 836.80 × 454.87
  4. Step 4: Simplify right side
    557.39x = 380,635.22
  5. Step 5: Solve for x
    x = 380,635.22/557.39
  6. Step 6: Final answer
    x = 682.89

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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.