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Finding the Fourth Proportional to 486.39, 725.30 and 482.00

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Solution

The fourth proportional to 486.39, 725.30 and 482.00 is: 718.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.39 : 725.30 = 482.00 : x
  2. Step 2: Convert to fraction form
    486.39/725.30 = 482.00/x
  3. Step 3: Cross multiply
    486.39x = 725.30 × 482.00
  4. Step 4: Simplify right side
    486.39x = 349,598.83
  5. Step 5: Solve for x
    x = 349,598.83/486.39
  6. Step 6: Final answer
    x = 718.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.