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Finding the Fourth Proportional to 58.28, 80.34 and 52.16

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Solution

The fourth proportional to 58.28, 80.34 and 52.16 is: 71.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.28 : 80.34 = 52.16 : x
  2. Step 2: Convert to fraction form
    58.28/80.34 = 52.16/x
  3. Step 3: Cross multiply
    58.28x = 80.34 × 52.16
  4. Step 4: Simplify right side
    58.28x = 4,190.53
  5. Step 5: Solve for x
    x = 4,190.53/58.28
  6. Step 6: Final answer
    x = 71.90

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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.