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Finding the Fourth Proportional to 471.72, 708.04 and 355.76

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Solution

The fourth proportional to 471.72, 708.04 and 355.76 is: 533.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.72 : 708.04 = 355.76 : x
  2. Step 2: Convert to fraction form
    471.72/708.04 = 355.76/x
  3. Step 3: Cross multiply
    471.72x = 708.04 × 355.76
  4. Step 4: Simplify right side
    471.72x = 251,892.31
  5. Step 5: Solve for x
    x = 251,892.31/471.72
  6. Step 6: Final answer
    x = 533.99

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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.