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Finding the Fourth Proportional to 657.48, 985.26 and 475.26

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Solution

The fourth proportional to 657.48, 985.26 and 475.26 is: 712.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.48 : 985.26 = 475.26 : x
  2. Step 2: Convert to fraction form
    657.48/985.26 = 475.26/x
  3. Step 3: Cross multiply
    657.48x = 985.26 × 475.26
  4. Step 4: Simplify right side
    657.48x = 468,254.67
  5. Step 5: Solve for x
    x = 468,254.67/657.48
  6. Step 6: Final answer
    x = 712.20

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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.