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Finding the Fourth Proportional to 653.47, 979.33 and 375.95

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Solution

The fourth proportional to 653.47, 979.33 and 375.95 is: 563.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.47 : 979.33 = 375.95 : x
  2. Step 2: Convert to fraction form
    653.47/979.33 = 375.95/x
  3. Step 3: Cross multiply
    653.47x = 979.33 × 375.95
  4. Step 4: Simplify right side
    653.47x = 368,179.11
  5. Step 5: Solve for x
    x = 368,179.11/653.47
  6. Step 6: Final answer
    x = 563.42

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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.