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Finding the Fourth Proportional to 1,056.35, 1,584.03 and 326.00

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Solution

The fourth proportional to 1,056.35, 1,584.03 and 326.00 is: 488.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,056.35 : 1,584.03 = 326.00 : x
  2. Step 2: Convert to fraction form
    1,056.35/1,584.03 = 326.00/x
  3. Step 3: Cross multiply
    1,056.35x = 1,584.03 × 326.00
  4. Step 4: Simplify right side
    1,056.35x = 516,385.86
  5. Step 5: Solve for x
    x = 516,385.86/1,056.35
  6. Step 6: Final answer
    x = 488.84

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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.