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Finding the Fourth Proportional to 700.23, 1,050.78 and 475.32

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Solution

The fourth proportional to 700.23, 1,050.78 and 475.32 is: 713.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.23 : 1,050.78 = 475.32 : x
  2. Step 2: Convert to fraction form
    700.23/1,050.78 = 475.32/x
  3. Step 3: Cross multiply
    700.23x = 1,050.78 × 475.32
  4. Step 4: Simplify right side
    700.23x = 499,456.75
  5. Step 5: Solve for x
    x = 499,456.75/700.23
  6. Step 6: Final answer
    x = 713.28

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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.