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Finding the Fourth Proportional to 872.08, 1,307.32 and 563.02

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Solution

The fourth proportional to 872.08, 1,307.32 and 563.02 is: 844.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    872.08 : 1,307.32 = 563.02 : x
  2. Step 2: Convert to fraction form
    872.08/1,307.32 = 563.02/x
  3. Step 3: Cross multiply
    872.08x = 1,307.32 × 563.02
  4. Step 4: Simplify right side
    872.08x = 736,045.80
  5. Step 5: Solve for x
    x = 736,045.80/872.08
  6. Step 6: Final answer
    x = 844.01

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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.