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Finding the Fourth Proportional to 567.90, 783.75 and 319.26

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Solution

The fourth proportional to 567.90, 783.75 and 319.26 is: 440.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    567.90 : 783.75 = 319.26 : x
  2. Step 2: Convert to fraction form
    567.90/783.75 = 319.26/x
  3. Step 3: Cross multiply
    567.90x = 783.75 × 319.26
  4. Step 4: Simplify right side
    567.90x = 250,220.03
  5. Step 5: Solve for x
    x = 250,220.03/567.90
  6. Step 6: Final answer
    x = 440.61

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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.