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Finding the Fourth Proportional to 347.77, 519.09 and 318.92

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Solution

The fourth proportional to 347.77, 519.09 and 318.92 is: 476.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.77 : 519.09 = 318.92 : x
  2. Step 2: Convert to fraction form
    347.77/519.09 = 318.92/x
  3. Step 3: Cross multiply
    347.77x = 519.09 × 318.92
  4. Step 4: Simplify right side
    347.77x = 165,545.59
  5. Step 5: Solve for x
    x = 165,545.59/347.77
  6. Step 6: Final answer
    x = 476.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.