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Finding the Fourth Proportional to 35.20, 52.55 and 34.30

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Solution

The fourth proportional to 35.20, 52.55 and 34.30 is: 51.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    35.20 : 52.55 = 34.30 : x
  2. Step 2: Convert to fraction form
    35.20/52.55 = 34.30/x
  3. Step 3: Cross multiply
    35.20x = 52.55 × 34.30
  4. Step 4: Simplify right side
    35.20x = 1,802.47
  5. Step 5: Solve for x
    x = 1,802.47/35.20
  6. Step 6: Final answer
    x = 51.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.