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Finding the Fourth Proportional to 53.71, 74.06 and 35.30

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Solution

The fourth proportional to 53.71, 74.06 and 35.30 is: 48.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.71 : 74.06 = 35.30 : x
  2. Step 2: Convert to fraction form
    53.71/74.06 = 35.30/x
  3. Step 3: Cross multiply
    53.71x = 74.06 × 35.30
  4. Step 4: Simplify right side
    53.71x = 2,614.32
  5. Step 5: Solve for x
    x = 2,614.32/53.71
  6. Step 6: Final answer
    x = 48.68

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.