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Finding the Fourth Proportional to 806.63, 1,113.24 and 452.64

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Solution

The fourth proportional to 806.63, 1,113.24 and 452.64 is: 624.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    806.63 : 1,113.24 = 452.64 : x
  2. Step 2: Convert to fraction form
    806.63/1,113.24 = 452.64/x
  3. Step 3: Cross multiply
    806.63x = 1,113.24 × 452.64
  4. Step 4: Simplify right side
    806.63x = 503,894.69
  5. Step 5: Solve for x
    x = 503,894.69/806.63
  6. Step 6: Final answer
    x = 624.70

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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.