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Finding the Fourth Proportional to 65.31, 97.43 and 58.83

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Solution

The fourth proportional to 65.31, 97.43 and 58.83 is: 87.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.31 : 97.43 = 58.83 : x
  2. Step 2: Convert to fraction form
    65.31/97.43 = 58.83/x
  3. Step 3: Cross multiply
    65.31x = 97.43 × 58.83
  4. Step 4: Simplify right side
    65.31x = 5,731.51
  5. Step 5: Solve for x
    x = 5,731.51/65.31
  6. Step 6: Final answer
    x = 87.76

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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.