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Finding the Fourth Proportional to 551.94, 826.02 and 453.30

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Solution

The fourth proportional to 551.94, 826.02 and 453.30 is: 678.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.94 : 826.02 = 453.30 : x
  2. Step 2: Convert to fraction form
    551.94/826.02 = 453.30/x
  3. Step 3: Cross multiply
    551.94x = 826.02 × 453.30
  4. Step 4: Simplify right side
    551.94x = 374,434.87
  5. Step 5: Solve for x
    x = 374,434.87/551.94
  6. Step 6: Final answer
    x = 678.40

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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.