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Finding the Fourth Proportional to 457.15, 631.22 and 352.08

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Solution

The fourth proportional to 457.15, 631.22 and 352.08 is: 486.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.15 : 631.22 = 352.08 : x
  2. Step 2: Convert to fraction form
    457.15/631.22 = 352.08/x
  3. Step 3: Cross multiply
    457.15x = 631.22 × 352.08
  4. Step 4: Simplify right side
    457.15x = 222,239.94
  5. Step 5: Solve for x
    x = 222,239.94/457.15
  6. Step 6: Final answer
    x = 486.14

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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.