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Finding the Fourth Proportional to 511.20, 705.42 and 336.24

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Solution

The fourth proportional to 511.20, 705.42 and 336.24 is: 463.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.20 : 705.42 = 336.24 : x
  2. Step 2: Convert to fraction form
    511.20/705.42 = 336.24/x
  3. Step 3: Cross multiply
    511.20x = 705.42 × 336.24
  4. Step 4: Simplify right side
    511.20x = 237,190.42
  5. Step 5: Solve for x
    x = 237,190.42/511.20
  6. Step 6: Final answer
    x = 463.99

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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.