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Finding the Fourth Proportional to 587.89, 811.33 and 339.26

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Solution

The fourth proportional to 587.89, 811.33 and 339.26 is: 468.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.89 : 811.33 = 339.26 : x
  2. Step 2: Convert to fraction form
    587.89/811.33 = 339.26/x
  3. Step 3: Cross multiply
    587.89x = 811.33 × 339.26
  4. Step 4: Simplify right side
    587.89x = 275,246.06
  5. Step 5: Solve for x
    x = 275,246.06/587.89
  6. Step 6: Final answer
    x = 468.19

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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.