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Finding the Fourth Proportional to 808.66, 1,116.21 and 547.03

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Solution

The fourth proportional to 808.66, 1,116.21 and 547.03 is: 755.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    808.66 : 1,116.21 = 547.03 : x
  2. Step 2: Convert to fraction form
    808.66/1,116.21 = 547.03/x
  3. Step 3: Cross multiply
    808.66x = 1,116.21 × 547.03
  4. Step 4: Simplify right side
    808.66x = 610,600.36
  5. Step 5: Solve for x
    x = 610,600.36/808.66
  6. Step 6: Final answer
    x = 755.08

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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.