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Finding the Fourth Proportional to 511.59, 706.02 and 290.55

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Solution

The fourth proportional to 511.59, 706.02 and 290.55 is: 400.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.59 : 706.02 = 290.55 : x
  2. Step 2: Convert to fraction form
    511.59/706.02 = 290.55/x
  3. Step 3: Cross multiply
    511.59x = 706.02 × 290.55
  4. Step 4: Simplify right side
    511.59x = 205,134.11
  5. Step 5: Solve for x
    x = 205,134.11/511.59
  6. Step 6: Final answer
    x = 400.97

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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.