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Finding the Fourth Proportional to 703.21, 1,059.90 and 663.52

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Solution

The fourth proportional to 703.21, 1,059.90 and 663.52 is: 1,000.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.21 : 1,059.90 = 663.52 : x
  2. Step 2: Convert to fraction form
    703.21/1,059.90 = 663.52/x
  3. Step 3: Cross multiply
    703.21x = 1,059.90 × 663.52
  4. Step 4: Simplify right side
    703.21x = 703,264.85
  5. Step 5: Solve for x
    x = 703,264.85/703.21
  6. Step 6: Final answer
    x = 1,000.08

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.