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Finding the Fourth Proportional to 668.99, 923.16 and 370.23

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Solution

The fourth proportional to 668.99, 923.16 and 370.23 is: 510.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.99 : 923.16 = 370.23 : x
  2. Step 2: Convert to fraction form
    668.99/923.16 = 370.23/x
  3. Step 3: Cross multiply
    668.99x = 923.16 × 370.23
  4. Step 4: Simplify right side
    668.99x = 341,781.53
  5. Step 5: Solve for x
    x = 341,781.53/668.99
  6. Step 6: Final answer
    x = 510.89

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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.