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Finding the Fourth Proportional to 453.76, 681.17 and 259.50

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Solution

The fourth proportional to 453.76, 681.17 and 259.50 is: 389.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.76 : 681.17 = 259.50 : x
  2. Step 2: Convert to fraction form
    453.76/681.17 = 259.50/x
  3. Step 3: Cross multiply
    453.76x = 681.17 × 259.50
  4. Step 4: Simplify right side
    453.76x = 176,758.91
  5. Step 5: Solve for x
    x = 176,758.91/453.76
  6. Step 6: Final answer
    x = 389.54

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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.