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Finding the Fourth Proportional to 808.17, 1,113.71 and 574.89

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Solution

The fourth proportional to 808.17, 1,113.71 and 574.89 is: 792.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    808.17 : 1,113.71 = 574.89 : x
  2. Step 2: Convert to fraction form
    808.17/1,113.71 = 574.89/x
  3. Step 3: Cross multiply
    808.17x = 1,113.71 × 574.89
  4. Step 4: Simplify right side
    808.17x = 640,260.74
  5. Step 5: Solve for x
    x = 640,260.74/808.17
  6. Step 6: Final answer
    x = 792.24

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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.