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Finding the Fourth Proportional to 521.19, 777.98 and 482.65

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Solution

The fourth proportional to 521.19, 777.98 and 482.65 is: 720.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.19 : 777.98 = 482.65 : x
  2. Step 2: Convert to fraction form
    521.19/777.98 = 482.65/x
  3. Step 3: Cross multiply
    521.19x = 777.98 × 482.65
  4. Step 4: Simplify right side
    521.19x = 375,491.31
  5. Step 5: Solve for x
    x = 375,491.31/521.19
  6. Step 6: Final answer
    x = 720.45

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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.