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Finding the Fourth Proportional to 435.52, 653.50 and 253.08

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Solution

The fourth proportional to 435.52, 653.50 and 253.08 is: 379.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.52 : 653.50 = 253.08 : x
  2. Step 2: Convert to fraction form
    435.52/653.50 = 253.08/x
  3. Step 3: Cross multiply
    435.52x = 653.50 × 253.08
  4. Step 4: Simplify right side
    435.52x = 165,387.78
  5. Step 5: Solve for x
    x = 165,387.78/435.52
  6. Step 6: Final answer
    x = 379.75

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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.