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Finding the Fourth Proportional to 703.32, 1,053.96 and 520.26

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Solution

The fourth proportional to 703.32, 1,053.96 and 520.26 is: 779.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.32 : 1,053.96 = 520.26 : x
  2. Step 2: Convert to fraction form
    703.32/1,053.96 = 520.26/x
  3. Step 3: Cross multiply
    703.32x = 1,053.96 × 520.26
  4. Step 4: Simplify right side
    703.32x = 548,333.23
  5. Step 5: Solve for x
    x = 548,333.23/703.32
  6. Step 6: Final answer
    x = 779.64

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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.