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Finding the Fourth Proportional to 706.36, 1,059.28 and 295.28

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Solution

The fourth proportional to 706.36, 1,059.28 and 295.28 is: 442.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.36 : 1,059.28 = 295.28 : x
  2. Step 2: Convert to fraction form
    706.36/1,059.28 = 295.28/x
  3. Step 3: Cross multiply
    706.36x = 1,059.28 × 295.28
  4. Step 4: Simplify right side
    706.36x = 312,784.20
  5. Step 5: Solve for x
    x = 312,784.20/706.36
  6. Step 6: Final answer
    x = 442.81

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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.