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Finding the Fourth Proportional to 591.72, 816.40 and 370.68

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Solution

The fourth proportional to 591.72, 816.40 and 370.68 is: 511.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.72 : 816.40 = 370.68 : x
  2. Step 2: Convert to fraction form
    591.72/816.40 = 370.68/x
  3. Step 3: Cross multiply
    591.72x = 816.40 × 370.68
  4. Step 4: Simplify right side
    591.72x = 302,623.15
  5. Step 5: Solve for x
    x = 302,623.15/591.72
  6. Step 6: Final answer
    x = 511.43

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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.