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Finding the Fourth Proportional to 511.17, 704.57 and 492.03

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Solution

The fourth proportional to 511.17, 704.57 and 492.03 is: 678.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.17 : 704.57 = 492.03 : x
  2. Step 2: Convert to fraction form
    511.17/704.57 = 492.03/x
  3. Step 3: Cross multiply
    511.17x = 704.57 × 492.03
  4. Step 4: Simplify right side
    511.17x = 346,667.12
  5. Step 5: Solve for x
    x = 346,667.12/511.17
  6. Step 6: Final answer
    x = 678.18

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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.