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Finding the Fourth Proportional to 808.95, 1,116.07 and 529.10

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Solution

The fourth proportional to 808.95, 1,116.07 and 529.10 is: 729.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    808.95 : 1,116.07 = 529.10 : x
  2. Step 2: Convert to fraction form
    808.95/1,116.07 = 529.10/x
  3. Step 3: Cross multiply
    808.95x = 1,116.07 × 529.10
  4. Step 4: Simplify right side
    808.95x = 590,505.73
  5. Step 5: Solve for x
    x = 590,505.73/808.95
  6. Step 6: Final answer
    x = 729.97

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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.