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Finding the Fourth Proportional to 511.99, 705.72 and 346.15

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Solution

The fourth proportional to 511.99, 705.72 and 346.15 is: 477.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.99 : 705.72 = 346.15 : x
  2. Step 2: Convert to fraction form
    511.99/705.72 = 346.15/x
  3. Step 3: Cross multiply
    511.99x = 705.72 × 346.15
  4. Step 4: Simplify right side
    511.99x = 244,284.98
  5. Step 5: Solve for x
    x = 244,284.98/511.99
  6. Step 6: Final answer
    x = 477.13

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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.