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Finding the Fourth Proportional to 700.01, 1,047.81 and 425.22

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Solution

The fourth proportional to 700.01, 1,047.81 and 425.22 is: 636.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.01 : 1,047.81 = 425.22 : x
  2. Step 2: Convert to fraction form
    700.01/1,047.81 = 425.22/x
  3. Step 3: Cross multiply
    700.01x = 1,047.81 × 425.22
  4. Step 4: Simplify right side
    700.01x = 445,549.77
  5. Step 5: Solve for x
    x = 445,549.77/700.01
  6. Step 6: Final answer
    x = 636.49

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1.5x scale

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.