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Finding the Fourth Proportional to 535.10, 801.35 and 380.30

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Solution

The fourth proportional to 535.10, 801.35 and 380.30 is: 569.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.10 : 801.35 = 380.30 : x
  2. Step 2: Convert to fraction form
    535.10/801.35 = 380.30/x
  3. Step 3: Cross multiply
    535.10x = 801.35 × 380.30
  4. Step 4: Simplify right side
    535.10x = 304,753.41
  5. Step 5: Solve for x
    x = 304,753.41/535.10
  6. Step 6: Final answer
    x = 569.53

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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.