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Finding the Fourth Proportional to 886.79, 1,331.03 and 454.25

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Solution

The fourth proportional to 886.79, 1,331.03 and 454.25 is: 681.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.79 : 1,331.03 = 454.25 : x
  2. Step 2: Convert to fraction form
    886.79/1,331.03 = 454.25/x
  3. Step 3: Cross multiply
    886.79x = 1,331.03 × 454.25
  4. Step 4: Simplify right side
    886.79x = 604,618.11
  5. Step 5: Solve for x
    x = 604,618.11/886.79
  6. Step 6: Final answer
    x = 681.81

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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.