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Finding the Fourth Proportional to 867.56, 1,301.26 and 477.43

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Solution

The fourth proportional to 867.56, 1,301.26 and 477.43 is: 716.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    867.56 : 1,301.26 = 477.43 : x
  2. Step 2: Convert to fraction form
    867.56/1,301.26 = 477.43/x
  3. Step 3: Cross multiply
    867.56x = 1,301.26 × 477.43
  4. Step 4: Simplify right side
    867.56x = 621,261.43
  5. Step 5: Solve for x
    x = 621,261.43/867.56
  6. Step 6: Final answer
    x = 716.10

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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.