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Finding the Fourth Proportional to 482.64, 723.94 and 387.06

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Solution

The fourth proportional to 482.64, 723.94 and 387.06 is: 580.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.64 : 723.94 = 387.06 : x
  2. Step 2: Convert to fraction form
    482.64/723.94 = 387.06/x
  3. Step 3: Cross multiply
    482.64x = 723.94 × 387.06
  4. Step 4: Simplify right side
    482.64x = 280,208.22
  5. Step 5: Solve for x
    x = 280,208.22/482.64
  6. Step 6: Final answer
    x = 580.57

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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.