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Finding the Fourth Proportional to 471.48, 649.62 and 352.98

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Solution

The fourth proportional to 471.48, 649.62 and 352.98 is: 486.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.48 : 649.62 = 352.98 : x
  2. Step 2: Convert to fraction form
    471.48/649.62 = 352.98/x
  3. Step 3: Cross multiply
    471.48x = 649.62 × 352.98
  4. Step 4: Simplify right side
    471.48x = 229,302.87
  5. Step 5: Solve for x
    x = 229,302.87/471.48
  6. Step 6: Final answer
    x = 486.35

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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.