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Finding the Fourth Proportional to 59.39, 88.49 and 56.81

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Solution

The fourth proportional to 59.39, 88.49 and 56.81 is: 84.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.39 : 88.49 = 56.81 : x
  2. Step 2: Convert to fraction form
    59.39/88.49 = 56.81/x
  3. Step 3: Cross multiply
    59.39x = 88.49 × 56.81
  4. Step 4: Simplify right side
    59.39x = 5,026.39
  5. Step 5: Solve for x
    x = 5,026.39/59.39
  6. Step 6: Final answer
    x = 84.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.