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Finding the Fourth Proportional to 482.94, 723.06 and 320.40

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Solution

The fourth proportional to 482.94, 723.06 and 320.40 is: 479.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.94 : 723.06 = 320.40 : x
  2. Step 2: Convert to fraction form
    482.94/723.06 = 320.40/x
  3. Step 3: Cross multiply
    482.94x = 723.06 × 320.40
  4. Step 4: Simplify right side
    482.94x = 231,668.42
  5. Step 5: Solve for x
    x = 231,668.42/482.94
  6. Step 6: Final answer
    x = 479.70

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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.