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Finding the Fourth Proportional to 59.25, 88.85 and 28.40

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Solution

The fourth proportional to 59.25, 88.85 and 28.40 is: 42.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.25 : 88.85 = 28.40 : x
  2. Step 2: Convert to fraction form
    59.25/88.85 = 28.40/x
  3. Step 3: Cross multiply
    59.25x = 88.85 × 28.40
  4. Step 4: Simplify right side
    59.25x = 2,523.34
  5. Step 5: Solve for x
    x = 2,523.34/59.25
  6. Step 6: Final answer
    x = 42.59

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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.