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Finding the Fourth Proportional to 708.73, 1,063.02 and 434.35

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Solution

The fourth proportional to 708.73, 1,063.02 and 434.35 is: 651.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.73 : 1,063.02 = 434.35 : x
  2. Step 2: Convert to fraction form
    708.73/1,063.02 = 434.35/x
  3. Step 3: Cross multiply
    708.73x = 1,063.02 × 434.35
  4. Step 4: Simplify right side
    708.73x = 461,717.42
  5. Step 5: Solve for x
    x = 461,717.42/708.73
  6. Step 6: Final answer
    x = 651.47

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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.