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Finding the Fourth Proportional to 7.52, 10.35 and 6.91

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Solution

The fourth proportional to 7.52, 10.35 and 6.91 is: 9.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7.52 : 10.35 = 6.91 : x
  2. Step 2: Convert to fraction form
    7.52/10.35 = 6.91/x
  3. Step 3: Cross multiply
    7.52x = 10.35 × 6.91
  4. Step 4: Simplify right side
    7.52x = 71.49
  5. Step 5: Solve for x
    x = 71.49/7.52
  6. Step 6: Final answer
    x = 9.51

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Why These Related Problems?

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