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Finding the Fourth Proportional to 673.10, 911.93 and 673.10

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Solution

The fourth proportional to 673.10, 911.93 and 673.10 is: 911.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.10 : 911.93 = 673.10 : x
  2. Step 2: Convert to fraction form
    673.10/911.93 = 673.10/x
  3. Step 3: Cross multiply
    673.10x = 911.93 × 673.10
  4. Step 4: Simplify right side
    673.10x = 613,820.08
  5. Step 5: Solve for x
    x = 613,820.08/673.10
  6. Step 6: Final answer
    x = 911.93

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.