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Finding the Fourth Proportional to 675.39, 919.53 and 673.29

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Solution

The fourth proportional to 675.39, 919.53 and 673.29 is: 916.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.39 : 919.53 = 673.29 : x
  2. Step 2: Convert to fraction form
    675.39/919.53 = 673.29/x
  3. Step 3: Cross multiply
    675.39x = 919.53 × 673.29
  4. Step 4: Simplify right side
    675.39x = 619,110.35
  5. Step 5: Solve for x
    x = 619,110.35/675.39
  6. Step 6: Final answer
    x = 916.67

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.