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Finding the Fourth Proportional to 700.87, 1,050.84 and 392.76

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Solution

The fourth proportional to 700.87, 1,050.84 and 392.76 is: 588.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.87 : 1,050.84 = 392.76 : x
  2. Step 2: Convert to fraction form
    700.87/1,050.84 = 392.76/x
  3. Step 3: Cross multiply
    700.87x = 1,050.84 × 392.76
  4. Step 4: Simplify right side
    700.87x = 412,727.92
  5. Step 5: Solve for x
    x = 412,727.92/700.87
  6. Step 6: Final answer
    x = 588.88

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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.