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Finding the Fourth Proportional to 673.67, 1,015.08 and 554.60

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Solution

The fourth proportional to 673.67, 1,015.08 and 554.60 is: 835.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.67 : 1,015.08 = 554.60 : x
  2. Step 2: Convert to fraction form
    673.67/1,015.08 = 554.60/x
  3. Step 3: Cross multiply
    673.67x = 1,015.08 × 554.60
  4. Step 4: Simplify right side
    673.67x = 562,958.29
  5. Step 5: Solve for x
    x = 562,958.29/673.67
  6. Step 6: Final answer
    x = 835.67

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.