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Finding the Fourth Proportional to 479.61, 660.83 and 453.69

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Solution

The fourth proportional to 479.61, 660.83 and 453.69 is: 625.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.61 : 660.83 = 453.69 : x
  2. Step 2: Convert to fraction form
    479.61/660.83 = 453.69/x
  3. Step 3: Cross multiply
    479.61x = 660.83 × 453.69
  4. Step 4: Simplify right side
    479.61x = 299,809.69
  5. Step 5: Solve for x
    x = 299,809.69/479.61
  6. Step 6: Final answer
    x = 625.11

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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.