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Finding the Fourth Proportional to 568.18, 783.75 and 361.18

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Solution

The fourth proportional to 568.18, 783.75 and 361.18 is: 498.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.18 : 783.75 = 361.18 : x
  2. Step 2: Convert to fraction form
    568.18/783.75 = 361.18/x
  3. Step 3: Cross multiply
    568.18x = 783.75 × 361.18
  4. Step 4: Simplify right side
    568.18x = 283,074.83
  5. Step 5: Solve for x
    x = 283,074.83/568.18
  6. Step 6: Final answer
    x = 498.21

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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.