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Finding the Fourth Proportional to 709.34, 1,063.06 and 401.06

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Solution

The fourth proportional to 709.34, 1,063.06 and 401.06 is: 601.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    709.34 : 1,063.06 = 401.06 : x
  2. Step 2: Convert to fraction form
    709.34/1,063.06 = 401.06/x
  3. Step 3: Cross multiply
    709.34x = 1,063.06 × 401.06
  4. Step 4: Simplify right side
    709.34x = 426,352.50
  5. Step 5: Solve for x
    x = 426,352.50/709.34
  6. Step 6: Final answer
    x = 601.06

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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.