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Finding the Fourth Proportional to 872.04, 1,307.88 and 482.42

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Solution

The fourth proportional to 872.04, 1,307.88 and 482.42 is: 723.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    872.04 : 1,307.88 = 482.42 : x
  2. Step 2: Convert to fraction form
    872.04/1,307.88 = 482.42/x
  3. Step 3: Cross multiply
    872.04x = 1,307.88 × 482.42
  4. Step 4: Simplify right side
    872.04x = 630,947.47
  5. Step 5: Solve for x
    x = 630,947.47/872.04
  6. Step 6: Final answer
    x = 723.53

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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.