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Finding the Fourth Proportional to 588.13, 811.69 and 339.53

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Solution

The fourth proportional to 588.13, 811.69 and 339.53 is: 468.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    588.13 : 811.69 = 339.53 : x
  2. Step 2: Convert to fraction form
    588.13/811.69 = 339.53/x
  3. Step 3: Cross multiply
    588.13x = 811.69 × 339.53
  4. Step 4: Simplify right side
    588.13x = 275,588.20
  5. Step 5: Solve for x
    x = 275,588.20/588.13
  6. Step 6: Final answer
    x = 468.59

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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.