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Finding the Fourth Proportional to 811.00, 1,119.14 and 456.93

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Solution

The fourth proportional to 811.00, 1,119.14 and 456.93 is: 630.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    811.00 : 1,119.14 = 456.93 : x
  2. Step 2: Convert to fraction form
    811.00/1,119.14 = 456.93/x
  3. Step 3: Cross multiply
    811.00x = 1,119.14 × 456.93
  4. Step 4: Simplify right side
    811.00x = 511,366.36
  5. Step 5: Solve for x
    x = 511,366.36/811.00
  6. Step 6: Final answer
    x = 630.54

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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.