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Finding the Fourth Proportional to 567.21, 850.76 and 258.98

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Solution

The fourth proportional to 567.21, 850.76 and 258.98 is: 388.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    567.21 : 850.76 = 258.98 : x
  2. Step 2: Convert to fraction form
    567.21/850.76 = 258.98/x
  3. Step 3: Cross multiply
    567.21x = 850.76 × 258.98
  4. Step 4: Simplify right side
    567.21x = 220,330.66
  5. Step 5: Solve for x
    x = 220,330.66/567.21
  6. Step 6: Final answer
    x = 388.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.