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Finding the Fourth Proportional to 56.95, 78.59 and 33.63

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Solution

The fourth proportional to 56.95, 78.59 and 33.63 is: 46.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    56.95 : 78.59 = 33.63 : x
  2. Step 2: Convert to fraction form
    56.95/78.59 = 33.63/x
  3. Step 3: Cross multiply
    56.95x = 78.59 × 33.63
  4. Step 4: Simplify right side
    56.95x = 2,643.23
  5. Step 5: Solve for x
    x = 2,643.23/56.95
  6. Step 6: Final answer
    x = 46.42

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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.