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Finding the Fourth Proportional to 55, 82.51 and 26.50

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Solution

The fourth proportional to 55, 82.51 and 26.50 is: 39.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    55 : 82.51 = 26.50 : x
  2. Step 2: Convert to fraction form
    55/82.51 = 26.50/x
  3. Step 3: Cross multiply
    55x = 82.51 × 26.50
  4. Step 4: Simplify right side
    55x = 2,186.52
  5. Step 5: Solve for x
    x = 2,186.52/55
  6. Step 6: Final answer
    x = 39.75

Related Problems

Find fourth proportional to 27.50, 41.26 and 13.25
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Double scale
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Similar ratio
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1.5x scale

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.