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Finding the Fourth Proportional to 453.99, 681.80 and 290.37

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Solution

The fourth proportional to 453.99, 681.80 and 290.37 is: 436.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.99 : 681.80 = 290.37 : x
  2. Step 2: Convert to fraction form
    453.99/681.80 = 290.37/x
  3. Step 3: Cross multiply
    453.99x = 681.80 × 290.37
  4. Step 4: Simplify right side
    453.99x = 197,972.81
  5. Step 5: Solve for x
    x = 197,972.81/453.99
  6. Step 6: Final answer
    x = 436.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.