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Finding the Fourth Proportional to 65.37, 89.04 and 65.19

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Solution

The fourth proportional to 65.37, 89.04 and 65.19 is: 88.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.37 : 89.04 = 65.19 : x
  2. Step 2: Convert to fraction form
    65.37/89.04 = 65.19/x
  3. Step 3: Cross multiply
    65.37x = 89.04 × 65.19
  4. Step 4: Simplify right side
    65.37x = 5,804.52
  5. Step 5: Solve for x
    x = 5,804.52/65.37
  6. Step 6: Final answer
    x = 88.79

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.