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Finding the Fourth Proportional to 657.48, 906.60 and 591.96

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Solution

The fourth proportional to 657.48, 906.60 and 591.96 is: 816.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.48 : 906.60 = 591.96 : x
  2. Step 2: Convert to fraction form
    657.48/906.60 = 591.96/x
  3. Step 3: Cross multiply
    657.48x = 906.60 × 591.96
  4. Step 4: Simplify right side
    657.48x = 536,670.94
  5. Step 5: Solve for x
    x = 536,670.94/657.48
  6. Step 6: Final answer
    x = 816.25

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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.