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Finding the Fourth Proportional to 707.67, 1,061.60 and 360.89

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Solution

The fourth proportional to 707.67, 1,061.60 and 360.89 is: 541.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.67 : 1,061.60 = 360.89 : x
  2. Step 2: Convert to fraction form
    707.67/1,061.60 = 360.89/x
  3. Step 3: Cross multiply
    707.67x = 1,061.60 × 360.89
  4. Step 4: Simplify right side
    707.67x = 383,120.82
  5. Step 5: Solve for x
    x = 383,120.82/707.67
  6. Step 6: Final answer
    x = 541.38

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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.