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Finding the Fourth Proportional to 885.60, 1,329.84 and 453.60

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Solution

The fourth proportional to 885.60, 1,329.84 and 453.60 is: 681.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.60 : 1,329.84 = 453.60 : x
  2. Step 2: Convert to fraction form
    885.60/1,329.84 = 453.60/x
  3. Step 3: Cross multiply
    885.60x = 1,329.84 × 453.60
  4. Step 4: Simplify right side
    885.60x = 603,215.42
  5. Step 5: Solve for x
    x = 603,215.42/885.60
  6. Step 6: Final answer
    x = 681.14

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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.