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Finding the Fourth Proportional to 73.69, 101.64 and 53.03

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Solution

The fourth proportional to 73.69, 101.64 and 53.03 is: 73.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.69 : 101.64 = 53.03 : x
  2. Step 2: Convert to fraction form
    73.69/101.64 = 53.03/x
  3. Step 3: Cross multiply
    73.69x = 101.64 × 53.03
  4. Step 4: Simplify right side
    73.69x = 5,389.97
  5. Step 5: Solve for x
    x = 5,389.97/73.69
  6. Step 6: Final answer
    x = 73.15

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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.