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Finding the Fourth Proportional to 53.11, 79.02 and 52.93

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Solution

The fourth proportional to 53.11, 79.02 and 52.93 is: 78.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.11 : 79.02 = 52.93 : x
  2. Step 2: Convert to fraction form
    53.11/79.02 = 52.93/x
  3. Step 3: Cross multiply
    53.11x = 79.02 × 52.93
  4. Step 4: Simplify right side
    53.11x = 4,182.13
  5. Step 5: Solve for x
    x = 4,182.13/53.11
  6. Step 6: Final answer
    x = 78.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.