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Finding the Fourth Proportional to 62.34, 86.04 and 56.28

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Solution

The fourth proportional to 62.34, 86.04 and 56.28 is: 77.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.34 : 86.04 = 56.28 : x
  2. Step 2: Convert to fraction form
    62.34/86.04 = 56.28/x
  3. Step 3: Cross multiply
    62.34x = 86.04 × 56.28
  4. Step 4: Simplify right side
    62.34x = 4,842.33
  5. Step 5: Solve for x
    x = 4,842.33/62.34
  6. Step 6: Final answer
    x = 77.68

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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.