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Finding the Fourth Proportional to 867.20, 1,301.33 and 635.51

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Solution

The fourth proportional to 867.20, 1,301.33 and 635.51 is: 953.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    867.20 : 1,301.33 = 635.51 : x
  2. Step 2: Convert to fraction form
    867.20/1,301.33 = 635.51/x
  3. Step 3: Cross multiply
    867.20x = 1,301.33 × 635.51
  4. Step 4: Simplify right side
    867.20x = 827,013.07
  5. Step 5: Solve for x
    x = 827,013.07/867.20
  6. Step 6: Final answer
    x = 953.66

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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.