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Finding the Fourth Proportional to 60.70, 91.46 and 52.60

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Solution

The fourth proportional to 60.70, 91.46 and 52.60 is: 79.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.70 : 91.46 = 52.60 : x
  2. Step 2: Convert to fraction form
    60.70/91.46 = 52.60/x
  3. Step 3: Cross multiply
    60.70x = 91.46 × 52.60
  4. Step 4: Simplify right side
    60.70x = 4,810.66
  5. Step 5: Solve for x
    x = 4,810.66/60.70
  6. Step 6: Final answer
    x = 79.25

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.