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Finding the Fourth Proportional to 880.21, 1,320.04 and 608.05

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Solution

The fourth proportional to 880.21, 1,320.04 and 608.05 is: 911.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.21 : 1,320.04 = 608.05 : x
  2. Step 2: Convert to fraction form
    880.21/1,320.04 = 608.05/x
  3. Step 3: Cross multiply
    880.21x = 1,320.04 × 608.05
  4. Step 4: Simplify right side
    880.21x = 802,643.60
  5. Step 5: Solve for x
    x = 802,643.60/880.21
  6. Step 6: Final answer
    x = 911.88

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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.