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Finding the Fourth Proportional to 1,125.04, 1,682.76 and 832.72

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Solution

The fourth proportional to 1,125.04, 1,682.76 and 832.72 is: 1,245.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125.04 : 1,682.76 = 832.72 : x
  2. Step 2: Convert to fraction form
    1,125.04/1,682.76 = 832.72/x
  3. Step 3: Cross multiply
    1,125.04x = 1,682.76 × 832.72
  4. Step 4: Simplify right side
    1,125.04x = 1,401,267.91
  5. Step 5: Solve for x
    x = 1,401,267.91/1,125.04
  6. Step 6: Final answer
    x = 1,245.53

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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.