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Finding the Fourth Proportional to 53.04, 73.53 and 51.66

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Solution

The fourth proportional to 53.04, 73.53 and 51.66 is: 71.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.04 : 73.53 = 51.66 : x
  2. Step 2: Convert to fraction form
    53.04/73.53 = 51.66/x
  3. Step 3: Cross multiply
    53.04x = 73.53 × 51.66
  4. Step 4: Simplify right side
    53.04x = 3,798.56
  5. Step 5: Solve for x
    x = 3,798.56/53.04
  6. Step 6: Final answer
    x = 71.62

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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.