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Finding the Fourth Proportional to 535.38, 801.52 and 479.80

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Solution

The fourth proportional to 535.38, 801.52 and 479.80 is: 718.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.38 : 801.52 = 479.80 : x
  2. Step 2: Convert to fraction form
    535.38/801.52 = 479.80/x
  3. Step 3: Cross multiply
    535.38x = 801.52 × 479.80
  4. Step 4: Simplify right side
    535.38x = 384,569.30
  5. Step 5: Solve for x
    x = 384,569.30/535.38
  6. Step 6: Final answer
    x = 718.31

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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.