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Finding the Fourth Proportional to 52.54, 72.45 and 43.29

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Solution

The fourth proportional to 52.54, 72.45 and 43.29 is: 59.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    52.54 : 72.45 = 43.29 : x
  2. Step 2: Convert to fraction form
    52.54/72.45 = 43.29/x
  3. Step 3: Cross multiply
    52.54x = 72.45 × 43.29
  4. Step 4: Simplify right side
    52.54x = 3,136.36
  5. Step 5: Solve for x
    x = 3,136.36/52.54
  6. Step 6: Final answer
    x = 59.70

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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.