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Finding the Fourth Proportional to 502.21, 693.53 and 474.94

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Solution

The fourth proportional to 502.21, 693.53 and 474.94 is: 655.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.21 : 693.53 = 474.94 : x
  2. Step 2: Convert to fraction form
    502.21/693.53 = 474.94/x
  3. Step 3: Cross multiply
    502.21x = 693.53 × 474.94
  4. Step 4: Simplify right side
    502.21x = 329,385.14
  5. Step 5: Solve for x
    x = 329,385.14/502.21
  6. Step 6: Final answer
    x = 655.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.