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Finding the Fourth Proportional to 619.54, 929.47 and 437.29

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Solution

The fourth proportional to 619.54, 929.47 and 437.29 is: 656.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.54 : 929.47 = 437.29 : x
  2. Step 2: Convert to fraction form
    619.54/929.47 = 437.29/x
  3. Step 3: Cross multiply
    619.54x = 929.47 × 437.29
  4. Step 4: Simplify right side
    619.54x = 406,450.26
  5. Step 5: Solve for x
    x = 406,450.26/619.54
  6. Step 6: Final answer
    x = 656.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.