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Finding the Fourth Proportional to 519.18, 715.76 and 371.56

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Solution

The fourth proportional to 519.18, 715.76 and 371.56 is: 512.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.18 : 715.76 = 371.56 : x
  2. Step 2: Convert to fraction form
    519.18/715.76 = 371.56/x
  3. Step 3: Cross multiply
    519.18x = 715.76 × 371.56
  4. Step 4: Simplify right side
    519.18x = 265,947.79
  5. Step 5: Solve for x
    x = 265,947.79/519.18
  6. Step 6: Final answer
    x = 512.25

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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.