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Finding the Fourth Proportional to 47.51, 64.68 and 46.70

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Solution

The fourth proportional to 47.51, 64.68 and 46.70 is: 63.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    47.51 : 64.68 = 46.70 : x
  2. Step 2: Convert to fraction form
    47.51/64.68 = 46.70/x
  3. Step 3: Cross multiply
    47.51x = 64.68 × 46.70
  4. Step 4: Simplify right side
    47.51x = 3,020.56
  5. Step 5: Solve for x
    x = 3,020.56/47.51
  6. Step 6: Final answer
    x = 63.58

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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.