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Finding the Fourth Proportional to 657.22, 901.08 and 645.52

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Solution

The fourth proportional to 657.22, 901.08 and 645.52 is: 885.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.22 : 901.08 = 645.52 : x
  2. Step 2: Convert to fraction form
    657.22/901.08 = 645.52/x
  3. Step 3: Cross multiply
    657.22x = 901.08 × 645.52
  4. Step 4: Simplify right side
    657.22x = 581,665.16
  5. Step 5: Solve for x
    x = 581,665.16/657.22
  6. Step 6: Final answer
    x = 885.04

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.