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Finding the Fourth Proportional to 5.90, 8.78 and 5.88

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Solution

The fourth proportional to 5.90, 8.78 and 5.88 is: 8.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5.90 : 8.78 = 5.88 : x
  2. Step 2: Convert to fraction form
    5.90/8.78 = 5.88/x
  3. Step 3: Cross multiply
    5.90x = 8.78 × 5.88
  4. Step 4: Simplify right side
    5.90x = 51.60
  5. Step 5: Solve for x
    x = 51.60/5.90
  6. Step 6: Final answer
    x = 8.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.