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Finding the Fourth Proportional to 562.05, 842.69 and 269.40

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Solution

The fourth proportional to 562.05, 842.69 and 269.40 is: 403.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.05 : 842.69 = 269.40 : x
  2. Step 2: Convert to fraction form
    562.05/842.69 = 269.40/x
  3. Step 3: Cross multiply
    562.05x = 842.69 × 269.40
  4. Step 4: Simplify right side
    562.05x = 227,019.34
  5. Step 5: Solve for x
    x = 227,019.34/562.05
  6. Step 6: Final answer
    x = 403.91

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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.