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Finding the Fourth Proportional to 1,052.84, 1,451.80 and 659.76

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Solution

The fourth proportional to 1,052.84, 1,451.80 and 659.76 is: 909.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,052.84 : 1,451.80 = 659.76 : x
  2. Step 2: Convert to fraction form
    1,052.84/1,451.80 = 659.76/x
  3. Step 3: Cross multiply
    1,052.84x = 1,451.80 × 659.76
  4. Step 4: Simplify right side
    1,052.84x = 957,839.57
  5. Step 5: Solve for x
    x = 957,839.57/1,052.84
  6. Step 6: Final answer
    x = 909.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.