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Finding the Fourth Proportional to 537.88, 807.09 and 407.83

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Solution

The fourth proportional to 537.88, 807.09 and 407.83 is: 611.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.88 : 807.09 = 407.83 : x
  2. Step 2: Convert to fraction form
    537.88/807.09 = 407.83/x
  3. Step 3: Cross multiply
    537.88x = 807.09 × 407.83
  4. Step 4: Simplify right side
    537.88x = 329,155.51
  5. Step 5: Solve for x
    x = 329,155.51/537.88
  6. Step 6: Final answer
    x = 611.95

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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.