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Finding the Fourth Proportional to 453.18, 676.98 and 436.98

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Solution

The fourth proportional to 453.18, 676.98 and 436.98 is: 652.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.18 : 676.98 = 436.98 : x
  2. Step 2: Convert to fraction form
    453.18/676.98 = 436.98/x
  3. Step 3: Cross multiply
    453.18x = 676.98 × 436.98
  4. Step 4: Simplify right side
    453.18x = 295,826.72
  5. Step 5: Solve for x
    x = 295,826.72/453.18
  6. Step 6: Final answer
    x = 652.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.