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Finding the Fourth Proportional to 837, 1,154.83 and 487.48

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Solution

The fourth proportional to 837, 1,154.83 and 487.48 is: 672.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    837 : 1,154.83 = 487.48 : x
  2. Step 2: Convert to fraction form
    837/1,154.83 = 487.48/x
  3. Step 3: Cross multiply
    837x = 1,154.83 × 487.48
  4. Step 4: Simplify right side
    837x = 562,956.53
  5. Step 5: Solve for x
    x = 562,956.53/837
  6. Step 6: Final answer
    x = 672.59

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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.