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Finding the Fourth Proportional to 518.29, 715.04 and 360.88

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Solution

The fourth proportional to 518.29, 715.04 and 360.88 is: 497.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.29 : 715.04 = 360.88 : x
  2. Step 2: Convert to fraction form
    518.29/715.04 = 360.88/x
  3. Step 3: Cross multiply
    518.29x = 715.04 × 360.88
  4. Step 4: Simplify right side
    518.29x = 258,041.83
  5. Step 5: Solve for x
    x = 258,041.83/518.29
  6. Step 6: Final answer
    x = 497.87

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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.