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Finding the Fourth Proportional to 437.08, 603.92 and 421.51

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Solution

The fourth proportional to 437.08, 603.92 and 421.51 is: 582.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.08 : 603.92 = 421.51 : x
  2. Step 2: Convert to fraction form
    437.08/603.92 = 421.51/x
  3. Step 3: Cross multiply
    437.08x = 603.92 × 421.51
  4. Step 4: Simplify right side
    437.08x = 254,558.32
  5. Step 5: Solve for x
    x = 254,558.32/437.08
  6. Step 6: Final answer
    x = 582.41

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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.