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Finding the Fourth Proportional to 588.16, 811.72 and 339.50

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Solution

The fourth proportional to 588.16, 811.72 and 339.50 is: 468.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    588.16 : 811.72 = 339.50 : x
  2. Step 2: Convert to fraction form
    588.16/811.72 = 339.50/x
  3. Step 3: Cross multiply
    588.16x = 811.72 × 339.50
  4. Step 4: Simplify right side
    588.16x = 275,578.94
  5. Step 5: Solve for x
    x = 275,578.94/588.16
  6. Step 6: Final answer
    x = 468.54

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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.