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Finding the Fourth Proportional to 502.87, 694.02 and 384.68

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Solution

The fourth proportional to 502.87, 694.02 and 384.68 is: 530.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.87 : 694.02 = 384.68 : x
  2. Step 2: Convert to fraction form
    502.87/694.02 = 384.68/x
  3. Step 3: Cross multiply
    502.87x = 694.02 × 384.68
  4. Step 4: Simplify right side
    502.87x = 266,970.22
  5. Step 5: Solve for x
    x = 266,970.22/502.87
  6. Step 6: Final answer
    x = 530.89

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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.