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Finding the Fourth Proportional to 473.54, 710.31 and 426.56

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Solution

The fourth proportional to 473.54, 710.31 and 426.56 is: 639.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.54 : 710.31 = 426.56 : x
  2. Step 2: Convert to fraction form
    473.54/710.31 = 426.56/x
  3. Step 3: Cross multiply
    473.54x = 710.31 × 426.56
  4. Step 4: Simplify right side
    473.54x = 302,989.83
  5. Step 5: Solve for x
    x = 302,989.83/473.54
  6. Step 6: Final answer
    x = 639.84

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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.