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Finding the Fourth Proportional to 706.63, 1,059.54 and 290.04

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Solution

The fourth proportional to 706.63, 1,059.54 and 290.04 is: 434.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.63 : 1,059.54 = 290.04 : x
  2. Step 2: Convert to fraction form
    706.63/1,059.54 = 290.04/x
  3. Step 3: Cross multiply
    706.63x = 1,059.54 × 290.04
  4. Step 4: Simplify right side
    706.63x = 307,313.41
  5. Step 5: Solve for x
    x = 307,313.41/706.63
  6. Step 6: Final answer
    x = 434.90

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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.