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Finding the Fourth Proportional to 29.58, 40.47 and 29.46

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Solution

The fourth proportional to 29.58, 40.47 and 29.46 is: 40.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    29.58 : 40.47 = 29.46 : x
  2. Step 2: Convert to fraction form
    29.58/40.47 = 29.46/x
  3. Step 3: Cross multiply
    29.58x = 40.47 × 29.46
  4. Step 4: Simplify right side
    29.58x = 1,192.10
  5. Step 5: Solve for x
    x = 1,192.10/29.58
  6. Step 6: Final answer
    x = 40.30

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.