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Finding the Fourth Proportional to 808.19, 1,115.72 and 544.02

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Solution

The fourth proportional to 808.19, 1,115.72 and 544.02 is: 751.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    808.19 : 1,115.72 = 544.02 : x
  2. Step 2: Convert to fraction form
    808.19/1,115.72 = 544.02/x
  3. Step 3: Cross multiply
    808.19x = 1,115.72 × 544.02
  4. Step 4: Simplify right side
    808.19x = 606,967.06
  5. Step 5: Solve for x
    x = 606,967.06/808.19
  6. Step 6: Final answer
    x = 751.02

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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.