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Finding the Fourth Proportional to 56.35, 84.55 and 25.93

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Solution

The fourth proportional to 56.35, 84.55 and 25.93 is: 38.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    56.35 : 84.55 = 25.93 : x
  2. Step 2: Convert to fraction form
    56.35/84.55 = 25.93/x
  3. Step 3: Cross multiply
    56.35x = 84.55 × 25.93
  4. Step 4: Simplify right side
    56.35x = 2,192.38
  5. Step 5: Solve for x
    x = 2,192.38/56.35
  6. Step 6: Final answer
    x = 38.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.