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Finding the Fourth Proportional to 59.97, 90 and 56.98

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Solution

The fourth proportional to 59.97, 90 and 56.98 is: 85.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.97 : 90 = 56.98 : x
  2. Step 2: Convert to fraction form
    59.97/90 = 56.98/x
  3. Step 3: Cross multiply
    59.97x = 90 × 56.98
  4. Step 4: Simplify right side
    59.97x = 5,128.31
  5. Step 5: Solve for x
    x = 5,128.31/59.97
  6. Step 6: Final answer
    x = 85.51

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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.