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Finding the Fourth Proportional to 59.37, 82.36 and 56.40

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Solution

The fourth proportional to 59.37, 82.36 and 56.40 is: 78.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.37 : 82.36 = 56.40 : x
  2. Step 2: Convert to fraction form
    59.37/82.36 = 56.40/x
  3. Step 3: Cross multiply
    59.37x = 82.36 × 56.40
  4. Step 4: Simplify right side
    59.37x = 4,645.10
  5. Step 5: Solve for x
    x = 4,645.10/59.37
  6. Step 6: Final answer
    x = 78.24

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.