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Finding the Fourth Proportional to 52.98, 73.14 and 51.36

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Solution

The fourth proportional to 52.98, 73.14 and 51.36 is: 70.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    52.98 : 73.14 = 51.36 : x
  2. Step 2: Convert to fraction form
    52.98/73.14 = 51.36/x
  3. Step 3: Cross multiply
    52.98x = 73.14 × 51.36
  4. Step 4: Simplify right side
    52.98x = 3,756.47
  5. Step 5: Solve for x
    x = 3,756.47/52.98
  6. Step 6: Final answer
    x = 70.90

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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.