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Finding the Fourth Proportional to 673.34, 929.97 and 664.25

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Solution

The fourth proportional to 673.34, 929.97 and 664.25 is: 917.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.34 : 929.97 = 664.25 : x
  2. Step 2: Convert to fraction form
    673.34/929.97 = 664.25/x
  3. Step 3: Cross multiply
    673.34x = 929.97 × 664.25
  4. Step 4: Simplify right side
    673.34x = 617,727.92
  5. Step 5: Solve for x
    x = 617,727.92/673.34
  6. Step 6: Final answer
    x = 917.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.