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Finding the Fourth Proportional to 506.07, 760.02 and 385.20

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Solution

The fourth proportional to 506.07, 760.02 and 385.20 is: 578.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.07 : 760.02 = 385.20 : x
  2. Step 2: Convert to fraction form
    506.07/760.02 = 385.20/x
  3. Step 3: Cross multiply
    506.07x = 760.02 × 385.20
  4. Step 4: Simplify right side
    506.07x = 292,759.70
  5. Step 5: Solve for x
    x = 292,759.70/506.07
  6. Step 6: Final answer
    x = 578.50

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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.