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Finding the Fourth Proportional to 591.40, 816.06 and 342.68

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Solution

The fourth proportional to 591.40, 816.06 and 342.68 is: 472.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.40 : 816.06 = 342.68 : x
  2. Step 2: Convert to fraction form
    591.40/816.06 = 342.68/x
  3. Step 3: Cross multiply
    591.40x = 816.06 × 342.68
  4. Step 4: Simplify right side
    591.40x = 279,643.36
  5. Step 5: Solve for x
    x = 279,643.36/591.40
  6. Step 6: Final answer
    x = 472.85

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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.