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Finding the Fourth Proportional to 1,008.84, 1,513.80 and 546.96

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Solution

The fourth proportional to 1,008.84, 1,513.80 and 546.96 is: 820.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008.84 : 1,513.80 = 546.96 : x
  2. Step 2: Convert to fraction form
    1,008.84/1,513.80 = 546.96/x
  3. Step 3: Cross multiply
    1,008.84x = 1,513.80 × 546.96
  4. Step 4: Simplify right side
    1,008.84x = 827,988.05
  5. Step 5: Solve for x
    x = 827,988.05/1,008.84
  6. Step 6: Final answer
    x = 820.73

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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.