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Finding the Fourth Proportional to 2,351.55, 3,527.57 and 707.79

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Solution

The fourth proportional to 2,351.55, 3,527.57 and 707.79 is: 1,061.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,351.55 : 3,527.57 = 707.79 : x
  2. Step 2: Convert to fraction form
    2,351.55/3,527.57 = 707.79/x
  3. Step 3: Cross multiply
    2,351.55x = 3,527.57 × 707.79
  4. Step 4: Simplify right side
    2,351.55x = 2,496,778.77
  5. Step 5: Solve for x
    x = 2,496,778.77/2,351.55
  6. Step 6: Final answer
    x = 1,061.76

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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.