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Finding the Fourth Proportional to 589.25, 812.70 and 367.79

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Solution

The fourth proportional to 589.25, 812.70 and 367.79 is: 507.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.25 : 812.70 = 367.79 : x
  2. Step 2: Convert to fraction form
    589.25/812.70 = 367.79/x
  3. Step 3: Cross multiply
    589.25x = 812.70 × 367.79
  4. Step 4: Simplify right side
    589.25x = 298,898.87
  5. Step 5: Solve for x
    x = 298,898.87/589.25
  6. Step 6: Final answer
    x = 507.25

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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.