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Finding the Fourth Proportional to 60.37, 83.75 and 57.40

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Solution

The fourth proportional to 60.37, 83.75 and 57.40 is: 79.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.37 : 83.75 = 57.40 : x
  2. Step 2: Convert to fraction form
    60.37/83.75 = 57.40/x
  3. Step 3: Cross multiply
    60.37x = 83.75 × 57.40
  4. Step 4: Simplify right side
    60.37x = 4,807.25
  5. Step 5: Solve for x
    x = 4,807.25/60.37
  6. Step 6: Final answer
    x = 79.63

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.