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Finding the Fourth Proportional to 670.03, 1,005.04 and 440.37

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Solution

The fourth proportional to 670.03, 1,005.04 and 440.37 is: 660.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.03 : 1,005.04 = 440.37 : x
  2. Step 2: Convert to fraction form
    670.03/1,005.04 = 440.37/x
  3. Step 3: Cross multiply
    670.03x = 1,005.04 × 440.37
  4. Step 4: Simplify right side
    670.03x = 442,590.02
  5. Step 5: Solve for x
    x = 442,590.02/670.03
  6. Step 6: Final answer
    x = 660.56

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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.