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Finding the Fourth Proportional to 908.52, 1,253.58 and 535.38

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Solution

The fourth proportional to 908.52, 1,253.58 and 535.38 is: 738.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    908.52 : 1,253.58 = 535.38 : x
  2. Step 2: Convert to fraction form
    908.52/1,253.58 = 535.38/x
  3. Step 3: Cross multiply
    908.52x = 1,253.58 × 535.38
  4. Step 4: Simplify right side
    908.52x = 671,141.66
  5. Step 5: Solve for x
    x = 671,141.66/908.52
  6. Step 6: Final answer
    x = 738.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.