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Finding the Fourth Proportional to 384.50, 527.15 and 377.58

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Solution

The fourth proportional to 384.50, 527.15 and 377.58 is: 517.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.50 : 527.15 = 377.58 : x
  2. Step 2: Convert to fraction form
    384.50/527.15 = 377.58/x
  3. Step 3: Cross multiply
    384.50x = 527.15 × 377.58
  4. Step 4: Simplify right side
    384.50x = 199,042.24
  5. Step 5: Solve for x
    x = 199,042.24/384.50
  6. Step 6: Final answer
    x = 517.66

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.