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Finding the Fourth Proportional to 519.10, 715.35 and 371.32

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Solution

The fourth proportional to 519.10, 715.35 and 371.32 is: 511.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.10 : 715.35 = 371.32 : x
  2. Step 2: Convert to fraction form
    519.10/715.35 = 371.32/x
  3. Step 3: Cross multiply
    519.10x = 715.35 × 371.32
  4. Step 4: Simplify right side
    519.10x = 265,623.76
  5. Step 5: Solve for x
    x = 265,623.76/519.10
  6. Step 6: Final answer
    x = 511.70

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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.