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Finding the Fourth Proportional to 60.66, 83.75 and 51.93

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Solution

The fourth proportional to 60.66, 83.75 and 51.93 is: 71.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.66 : 83.75 = 51.93 : x
  2. Step 2: Convert to fraction form
    60.66/83.75 = 51.93/x
  3. Step 3: Cross multiply
    60.66x = 83.75 × 51.93
  4. Step 4: Simplify right side
    60.66x = 4,348.88
  5. Step 5: Solve for x
    x = 4,348.88/60.66
  6. Step 6: Final answer
    x = 71.69

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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.