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Finding the Fourth Proportional to 53.40, 73.65 and 36.77

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Solution

The fourth proportional to 53.40, 73.65 and 36.77 is: 50.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.40 : 73.65 = 36.77 : x
  2. Step 2: Convert to fraction form
    53.40/73.65 = 36.77/x
  3. Step 3: Cross multiply
    53.40x = 73.65 × 36.77
  4. Step 4: Simplify right side
    53.40x = 2,707.74
  5. Step 5: Solve for x
    x = 2,707.74/53.40
  6. Step 6: Final answer
    x = 50.71

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Find fourth proportional to 26.70, 36.83 and 18.38
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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.