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Finding the Fourth Proportional to 59.21, 88.74 and 51.11

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Solution

The fourth proportional to 59.21, 88.74 and 51.11 is: 76.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.21 : 88.74 = 51.11 : x
  2. Step 2: Convert to fraction form
    59.21/88.74 = 51.11/x
  3. Step 3: Cross multiply
    59.21x = 88.74 × 51.11
  4. Step 4: Simplify right side
    59.21x = 4,535.50
  5. Step 5: Solve for x
    x = 4,535.50/59.21
  6. Step 6: Final answer
    x = 76.60

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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.