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Finding the Fourth Proportional to 591.94, 816.81 and 370.81

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Solution

The fourth proportional to 591.94, 816.81 and 370.81 is: 511.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.94 : 816.81 = 370.81 : x
  2. Step 2: Convert to fraction form
    591.94/816.81 = 370.81/x
  3. Step 3: Cross multiply
    591.94x = 816.81 × 370.81
  4. Step 4: Simplify right side
    591.94x = 302,881.32
  5. Step 5: Solve for x
    x = 302,881.32/591.94
  6. Step 6: Final answer
    x = 511.68

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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.