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Finding the Fourth Proportional to 803.11, 1,108.34 and 453.82

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Solution

The fourth proportional to 803.11, 1,108.34 and 453.82 is: 626.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    803.11 : 1,108.34 = 453.82 : x
  2. Step 2: Convert to fraction form
    803.11/1,108.34 = 453.82/x
  3. Step 3: Cross multiply
    803.11x = 1,108.34 × 453.82
  4. Step 4: Simplify right side
    803.11x = 502,985.22
  5. Step 5: Solve for x
    x = 502,985.22/803.11
  6. Step 6: Final answer
    x = 626.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.