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Finding the Fourth Proportional to 52.80, 72.86 and 32.07

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Solution

The fourth proportional to 52.80, 72.86 and 32.07 is: 44.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    52.80 : 72.86 = 32.07 : x
  2. Step 2: Convert to fraction form
    52.80/72.86 = 32.07/x
  3. Step 3: Cross multiply
    52.80x = 72.86 × 32.07
  4. Step 4: Simplify right side
    52.80x = 2,336.62
  5. Step 5: Solve for x
    x = 2,336.62/52.80
  6. Step 6: Final answer
    x = 44.25

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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.