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Finding the Fourth Proportional to 5.60, 8.39 and 3.58

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Solution

The fourth proportional to 5.60, 8.39 and 3.58 is: 5.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5.60 : 8.39 = 3.58 : x
  2. Step 2: Convert to fraction form
    5.60/8.39 = 3.58/x
  3. Step 3: Cross multiply
    5.60x = 8.39 × 3.58
  4. Step 4: Simplify right side
    5.60x = 30.02
  5. Step 5: Solve for x
    x = 30.02/5.60
  6. Step 6: Final answer
    x = 5.36

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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.