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Finding the Fourth Proportional to 568.49, 783.99 and 358.43

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Solution

The fourth proportional to 568.49, 783.99 and 358.43 is: 494.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.49 : 783.99 = 358.43 : x
  2. Step 2: Convert to fraction form
    568.49/783.99 = 358.43/x
  3. Step 3: Cross multiply
    568.49x = 783.99 × 358.43
  4. Step 4: Simplify right side
    568.49x = 281,001.62
  5. Step 5: Solve for x
    x = 281,001.62/568.49
  6. Step 6: Final answer
    x = 494.30

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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.