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Finding the Fourth Proportional to 657.22, 906.80 and 373.62

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Solution

The fourth proportional to 657.22, 906.80 and 373.62 is: 515.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.22 : 906.80 = 373.62 : x
  2. Step 2: Convert to fraction form
    657.22/906.80 = 373.62/x
  3. Step 3: Cross multiply
    657.22x = 906.80 × 373.62
  4. Step 4: Simplify right side
    657.22x = 338,798.62
  5. Step 5: Solve for x
    x = 338,798.62/657.22
  6. Step 6: Final answer
    x = 515.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.