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Finding the Fourth Proportional to 5.87, 8.10 and 4.05

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Solution

The fourth proportional to 5.87, 8.10 and 4.05 is: 5.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5.87 : 8.10 = 4.05 : x
  2. Step 2: Convert to fraction form
    5.87/8.10 = 4.05/x
  3. Step 3: Cross multiply
    5.87x = 8.10 × 4.05
  4. Step 4: Simplify right side
    5.87x = 32.81
  5. Step 5: Solve for x
    x = 32.81/5.87
  6. Step 6: Final answer
    x = 5.59

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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.