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Finding the Fourth Proportional to 59.63, 89.93 and 57.47

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Solution

The fourth proportional to 59.63, 89.93 and 57.47 is: 86.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.63 : 89.93 = 57.47 : x
  2. Step 2: Convert to fraction form
    59.63/89.93 = 57.47/x
  3. Step 3: Cross multiply
    59.63x = 89.93 × 57.47
  4. Step 4: Simplify right side
    59.63x = 5,167.97
  5. Step 5: Solve for x
    x = 5,167.97/59.63
  6. Step 6: Final answer
    x = 86.67

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.