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Finding the Fourth Proportional to 668.40, 923.31 and 606.30

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Solution

The fourth proportional to 668.40, 923.31 and 606.30 is: 837.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.40 : 923.31 = 606.30 : x
  2. Step 2: Convert to fraction form
    668.40/923.31 = 606.30/x
  3. Step 3: Cross multiply
    668.40x = 923.31 × 606.30
  4. Step 4: Simplify right side
    668.40x = 559,802.85
  5. Step 5: Solve for x
    x = 559,802.85/668.40
  6. Step 6: Final answer
    x = 837.53

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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.