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Finding the Fourth Proportional to 707.22, 1,061.06 and 360.74

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Solution

The fourth proportional to 707.22, 1,061.06 and 360.74 is: 541.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.22 : 1,061.06 = 360.74 : x
  2. Step 2: Convert to fraction form
    707.22/1,061.06 = 360.74/x
  3. Step 3: Cross multiply
    707.22x = 1,061.06 × 360.74
  4. Step 4: Simplify right side
    707.22x = 382,766.78
  5. Step 5: Solve for x
    x = 382,766.78/707.22
  6. Step 6: Final answer
    x = 541.23

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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.