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Finding the Fourth Proportional to 52.83, 79.05 and 51.66

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Solution

The fourth proportional to 52.83, 79.05 and 51.66 is: 77.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    52.83 : 79.05 = 51.66 : x
  2. Step 2: Convert to fraction form
    52.83/79.05 = 51.66/x
  3. Step 3: Cross multiply
    52.83x = 79.05 × 51.66
  4. Step 4: Simplify right side
    52.83x = 4,083.72
  5. Step 5: Solve for x
    x = 4,083.72/52.83
  6. Step 6: Final answer
    x = 77.30

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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.