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Finding the Fourth Proportional to 806.42, 1,113.36 and 512.04

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Solution

The fourth proportional to 806.42, 1,113.36 and 512.04 is: 706.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    806.42 : 1,113.36 = 512.04 : x
  2. Step 2: Convert to fraction form
    806.42/1,113.36 = 512.04/x
  3. Step 3: Cross multiply
    806.42x = 1,113.36 × 512.04
  4. Step 4: Simplify right side
    806.42x = 570,084.85
  5. Step 5: Solve for x
    x = 570,084.85/806.42
  6. Step 6: Final answer
    x = 706.93

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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.