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Finding the Fourth Proportional to 479.04, 660.72 and 348.48

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Solution

The fourth proportional to 479.04, 660.72 and 348.48 is: 480.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.04 : 660.72 = 348.48 : x
  2. Step 2: Convert to fraction form
    479.04/660.72 = 348.48/x
  3. Step 3: Cross multiply
    479.04x = 660.72 × 348.48
  4. Step 4: Simplify right side
    479.04x = 230,247.71
  5. Step 5: Solve for x
    x = 230,247.71/479.04
  6. Step 6: Final answer
    x = 480.64

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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.