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Finding the Fourth Proportional to 511.28, 705.56 and 301.46

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Solution

The fourth proportional to 511.28, 705.56 and 301.46 is: 416.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.28 : 705.56 = 301.46 : x
  2. Step 2: Convert to fraction form
    511.28/705.56 = 301.46/x
  3. Step 3: Cross multiply
    511.28x = 705.56 × 301.46
  4. Step 4: Simplify right side
    511.28x = 212,693.08
  5. Step 5: Solve for x
    x = 212,693.08/511.28
  6. Step 6: Final answer
    x = 416.01

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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.