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Finding the Fourth Proportional to 656.44, 904.34 and 456.92

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Solution

The fourth proportional to 656.44, 904.34 and 456.92 is: 629.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.44 : 904.34 = 456.92 : x
  2. Step 2: Convert to fraction form
    656.44/904.34 = 456.92/x
  3. Step 3: Cross multiply
    656.44x = 904.34 × 456.92
  4. Step 4: Simplify right side
    656.44x = 413,216.13
  5. Step 5: Solve for x
    x = 413,216.13/656.44
  6. Step 6: Final answer
    x = 629.48

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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.