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Finding the Fourth Proportional to 59.94, 90.27 and 59.40

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Solution

The fourth proportional to 59.94, 90.27 and 59.40 is: 89.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.94 : 90.27 = 59.40 : x
  2. Step 2: Convert to fraction form
    59.94/90.27 = 59.40/x
  3. Step 3: Cross multiply
    59.94x = 90.27 × 59.40
  4. Step 4: Simplify right side
    59.94x = 5,362.04
  5. Step 5: Solve for x
    x = 5,362.04/59.94
  6. Step 6: Final answer
    x = 89.46

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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.