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Finding the Fourth Proportional to 516.14, 711.70 and 368.72

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Solution

The fourth proportional to 516.14, 711.70 and 368.72 is: 508.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.14 : 711.70 = 368.72 : x
  2. Step 2: Convert to fraction form
    516.14/711.70 = 368.72/x
  3. Step 3: Cross multiply
    516.14x = 711.70 × 368.72
  4. Step 4: Simplify right side
    516.14x = 262,418.02
  5. Step 5: Solve for x
    x = 262,418.02/516.14
  6. Step 6: Final answer
    x = 508.42

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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.