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Finding the Fourth Proportional to 707.77, 1,061.96 and 296.99

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Solution

The fourth proportional to 707.77, 1,061.96 and 296.99 is: 445.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.77 : 1,061.96 = 296.99 : x
  2. Step 2: Convert to fraction form
    707.77/1,061.96 = 296.99/x
  3. Step 3: Cross multiply
    707.77x = 1,061.96 × 296.99
  4. Step 4: Simplify right side
    707.77x = 315,391.50
  5. Step 5: Solve for x
    x = 315,391.50/707.77
  6. Step 6: Final answer
    x = 445.61

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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.