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Finding the Fourth Proportional to 474.64, 710.07 and 422.68

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Solution

The fourth proportional to 474.64, 710.07 and 422.68 is: 632.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.64 : 710.07 = 422.68 : x
  2. Step 2: Convert to fraction form
    474.64/710.07 = 422.68/x
  3. Step 3: Cross multiply
    474.64x = 710.07 × 422.68
  4. Step 4: Simplify right side
    474.64x = 300,132.39
  5. Step 5: Solve for x
    x = 300,132.39/474.64
  6. Step 6: Final answer
    x = 632.34

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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.