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Finding the Fourth Proportional to 657.20, 908.16 and 604.95

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Solution

The fourth proportional to 657.20, 908.16 and 604.95 is: 835.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.20 : 908.16 = 604.95 : x
  2. Step 2: Convert to fraction form
    657.20/908.16 = 604.95/x
  3. Step 3: Cross multiply
    657.20x = 908.16 × 604.95
  4. Step 4: Simplify right side
    657.20x = 549,391.39
  5. Step 5: Solve for x
    x = 549,391.39/657.20
  6. Step 6: Final answer
    x = 835.96

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