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Finding the Fourth Proportional to 744.24, 1,026.58 and 479.03

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Solution

The fourth proportional to 744.24, 1,026.58 and 479.03 is: 660.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    744.24 : 1,026.58 = 479.03 : x
  2. Step 2: Convert to fraction form
    744.24/1,026.58 = 479.03/x
  3. Step 3: Cross multiply
    744.24x = 1,026.58 × 479.03
  4. Step 4: Simplify right side
    744.24x = 491,760.91
  5. Step 5: Solve for x
    x = 491,760.91/744.24
  6. Step 6: Final answer
    x = 660.76

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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.