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Finding the Fourth Proportional to 886.00, 1,328.98 and 539.43

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Solution

The fourth proportional to 886.00, 1,328.98 and 539.43 is: 809.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.00 : 1,328.98 = 539.43 : x
  2. Step 2: Convert to fraction form
    886.00/1,328.98 = 539.43/x
  3. Step 3: Cross multiply
    886.00x = 1,328.98 × 539.43
  4. Step 4: Simplify right side
    886.00x = 716,885.04
  5. Step 5: Solve for x
    x = 716,885.04/886.00
  6. Step 6: Final answer
    x = 809.13

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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.