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Finding the Fourth Proportional to 841.37, 1,261.56 and 564.03

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Solution

The fourth proportional to 841.37, 1,261.56 and 564.03 is: 845.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    841.37 : 1,261.56 = 564.03 : x
  2. Step 2: Convert to fraction form
    841.37/1,261.56 = 564.03/x
  3. Step 3: Cross multiply
    841.37x = 1,261.56 × 564.03
  4. Step 4: Simplify right side
    841.37x = 711,557.69
  5. Step 5: Solve for x
    x = 711,557.69/841.37
  6. Step 6: Final answer
    x = 845.71

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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.