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Finding the Fourth Proportional to 439.04, 605.28 and 373.40

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Solution

The fourth proportional to 439.04, 605.28 and 373.40 is: 514.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.04 : 605.28 = 373.40 : x
  2. Step 2: Convert to fraction form
    439.04/605.28 = 373.40/x
  3. Step 3: Cross multiply
    439.04x = 605.28 × 373.40
  4. Step 4: Simplify right side
    439.04x = 226,011.55
  5. Step 5: Solve for x
    x = 226,011.55/439.04
  6. Step 6: Final answer
    x = 514.79

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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.