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Finding the Fourth Proportional to 484.28, 726.54 and 430.58

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Solution

The fourth proportional to 484.28, 726.54 and 430.58 is: 645.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.28 : 726.54 = 430.58 : x
  2. Step 2: Convert to fraction form
    484.28/726.54 = 430.58/x
  3. Step 3: Cross multiply
    484.28x = 726.54 × 430.58
  4. Step 4: Simplify right side
    484.28x = 312,833.59
  5. Step 5: Solve for x
    x = 312,833.59/484.28
  6. Step 6: Final answer
    x = 645.98

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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.