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Finding the Fourth Proportional to 670.40, 923.84 and 504.32

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Solution

The fourth proportional to 670.40, 923.84 and 504.32 is: 694.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.40 : 923.84 = 504.32 : x
  2. Step 2: Convert to fraction form
    670.40/923.84 = 504.32/x
  3. Step 3: Cross multiply
    670.40x = 923.84 × 504.32
  4. Step 4: Simplify right side
    670.40x = 465,910.99
  5. Step 5: Solve for x
    x = 465,910.99/670.40
  6. Step 6: Final answer
    x = 694.97

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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.