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Finding the Fourth Proportional to 62.31, 86.01 and 52.45

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Solution

The fourth proportional to 62.31, 86.01 and 52.45 is: 72.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.31 : 86.01 = 52.45 : x
  2. Step 2: Convert to fraction form
    62.31/86.01 = 52.45/x
  3. Step 3: Cross multiply
    62.31x = 86.01 × 52.45
  4. Step 4: Simplify right side
    62.31x = 4,511.22
  5. Step 5: Solve for x
    x = 4,511.22/62.31
  6. Step 6: Final answer
    x = 72.40

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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.