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Finding the Fourth Proportional to 5.25, 7.24 and 4.77

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Solution

The fourth proportional to 5.25, 7.24 and 4.77 is: 6.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5.25 : 7.24 = 4.77 : x
  2. Step 2: Convert to fraction form
    5.25/7.24 = 4.77/x
  3. Step 3: Cross multiply
    5.25x = 7.24 × 4.77
  4. Step 4: Simplify right side
    5.25x = 34.47
  5. Step 5: Solve for x
    x = 34.47/5.25
  6. Step 6: Final answer
    x = 6.57

Related Problems

Find fourth proportional to 2.63, 3.62 and 2.38
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Double scale
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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.