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Finding the Fourth Proportional to 52.41, 71.88 and 51.69

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Solution

The fourth proportional to 52.41, 71.88 and 51.69 is: 70.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    52.41 : 71.88 = 51.69 : x
  2. Step 2: Convert to fraction form
    52.41/71.88 = 51.69/x
  3. Step 3: Cross multiply
    52.41x = 71.88 × 51.69
  4. Step 4: Simplify right side
    52.41x = 3,715.48
  5. Step 5: Solve for x
    x = 3,715.48/52.41
  6. Step 6: Final answer
    x = 70.89

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.