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Finding the Fourth Proportional to 880.07, 1,213.35 and 547.91

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Solution

The fourth proportional to 880.07, 1,213.35 and 547.91 is: 755.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.07 : 1,213.35 = 547.91 : x
  2. Step 2: Convert to fraction form
    880.07/1,213.35 = 547.91/x
  3. Step 3: Cross multiply
    880.07x = 1,213.35 × 547.91
  4. Step 4: Simplify right side
    880.07x = 664,800.53
  5. Step 5: Solve for x
    x = 664,800.53/880.07
  6. Step 6: Final answer
    x = 755.40

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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.