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Finding the Fourth Proportional to 700.02, 1,047.60 and 426.24

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Solution

The fourth proportional to 700.02, 1,047.60 and 426.24 is: 637.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.02 : 1,047.60 = 426.24 : x
  2. Step 2: Convert to fraction form
    700.02/1,047.60 = 426.24/x
  3. Step 3: Cross multiply
    700.02x = 1,047.60 × 426.24
  4. Step 4: Simplify right side
    700.02x = 446,529.02
  5. Step 5: Solve for x
    x = 446,529.02/700.02
  6. Step 6: Final answer
    x = 637.88

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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.