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Finding the Fourth Proportional to 562.41, 842.81 and 480.40

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Solution

The fourth proportional to 562.41, 842.81 and 480.40 is: 719.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.41 : 842.81 = 480.40 : x
  2. Step 2: Convert to fraction form
    562.41/842.81 = 480.40/x
  3. Step 3: Cross multiply
    562.41x = 842.81 × 480.40
  4. Step 4: Simplify right side
    562.41x = 404,881.41
  5. Step 5: Solve for x
    x = 404,881.41/562.41
  6. Step 6: Final answer
    x = 719.90

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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.