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Finding the Fourth Proportional to 60.10, 82.80 and 50.86

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Solution

The fourth proportional to 60.10, 82.80 and 50.86 is: 70.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.10 : 82.80 = 50.86 : x
  2. Step 2: Convert to fraction form
    60.10/82.80 = 50.86/x
  3. Step 3: Cross multiply
    60.10x = 82.80 × 50.86
  4. Step 4: Simplify right side
    60.10x = 4,211.21
  5. Step 5: Solve for x
    x = 4,211.21/60.10
  6. Step 6: Final answer
    x = 70.07

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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.