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Finding the Fourth Proportional to 437.48, 604.20 and 340.40

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Solution

The fourth proportional to 437.48, 604.20 and 340.40 is: 470.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.48 : 604.20 = 340.40 : x
  2. Step 2: Convert to fraction form
    437.48/604.20 = 340.40/x
  3. Step 3: Cross multiply
    437.48x = 604.20 × 340.40
  4. Step 4: Simplify right side
    437.48x = 205,669.68
  5. Step 5: Solve for x
    x = 205,669.68/437.48
  6. Step 6: Final answer
    x = 470.12

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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.