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Finding the Fourth Proportional to 710.71, 1,065.83 and 299.73

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Solution

The fourth proportional to 710.71, 1,065.83 and 299.73 is: 449.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.71 : 1,065.83 = 299.73 : x
  2. Step 2: Convert to fraction form
    710.71/1,065.83 = 299.73/x
  3. Step 3: Cross multiply
    710.71x = 1,065.83 × 299.73
  4. Step 4: Simplify right side
    710.71x = 319,463.72
  5. Step 5: Solve for x
    x = 319,463.72/710.71
  6. Step 6: Final answer
    x = 449.50

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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.