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Finding the Fourth Proportional to 437.85, 604.60 and 391.14

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Solution

The fourth proportional to 437.85, 604.60 and 391.14 is: 540.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.85 : 604.60 = 391.14 : x
  2. Step 2: Convert to fraction form
    437.85/604.60 = 391.14/x
  3. Step 3: Cross multiply
    437.85x = 604.60 × 391.14
  4. Step 4: Simplify right side
    437.85x = 236,482.27
  5. Step 5: Solve for x
    x = 236,482.27/437.85
  6. Step 6: Final answer
    x = 540.10

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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.