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Finding the Fourth Proportional to 65.02, 97.43 and 30.70

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Solution

The fourth proportional to 65.02, 97.43 and 30.70 is: 46.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.02 : 97.43 = 30.70 : x
  2. Step 2: Convert to fraction form
    65.02/97.43 = 30.70/x
  3. Step 3: Cross multiply
    65.02x = 97.43 × 30.70
  4. Step 4: Simplify right side
    65.02x = 2,990.93
  5. Step 5: Solve for x
    x = 2,990.93/65.02
  6. Step 6: Final answer
    x = 46.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.