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Finding the Fourth Proportional to 585.40, 807.82 and 349.44

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Solution

The fourth proportional to 585.40, 807.82 and 349.44 is: 482.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.40 : 807.82 = 349.44 : x
  2. Step 2: Convert to fraction form
    585.40/807.82 = 349.44/x
  3. Step 3: Cross multiply
    585.40x = 807.82 × 349.44
  4. Step 4: Simplify right side
    585.40x = 282,284.62
  5. Step 5: Solve for x
    x = 282,284.62/585.40
  6. Step 6: Final answer
    x = 482.21

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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.