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Finding the Fourth Proportional to 59.04, 81.50 and 42.48

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Solution

The fourth proportional to 59.04, 81.50 and 42.48 is: 58.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.04 : 81.50 = 42.48 : x
  2. Step 2: Convert to fraction form
    59.04/81.50 = 42.48/x
  3. Step 3: Cross multiply
    59.04x = 81.50 × 42.48
  4. Step 4: Simplify right side
    59.04x = 3,461.91
  5. Step 5: Solve for x
    x = 3,461.91/59.04
  6. Step 6: Final answer
    x = 58.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.