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Finding the Fourth Proportional to 673.70, 945.10 and 673.70

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Solution

The fourth proportional to 673.70, 945.10 and 673.70 is: 945.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.70 : 945.10 = 673.70 : x
  2. Step 2: Convert to fraction form
    673.70/945.10 = 673.70/x
  3. Step 3: Cross multiply
    673.70x = 945.10 × 673.70
  4. Step 4: Simplify right side
    673.70x = 636,713.87
  5. Step 5: Solve for x
    x = 636,713.87/673.70
  6. Step 6: Final answer
    x = 945.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.