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Finding the Fourth Proportional to 75.02, 112.51 and 29.39

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Solution

The fourth proportional to 75.02, 112.51 and 29.39 is: 44.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    75.02 : 112.51 = 29.39 : x
  2. Step 2: Convert to fraction form
    75.02/112.51 = 29.39/x
  3. Step 3: Cross multiply
    75.02x = 112.51 × 29.39
  4. Step 4: Simplify right side
    75.02x = 3,307.20
  5. Step 5: Solve for x
    x = 3,307.20/75.02
  6. Step 6: Final answer
    x = 44.09

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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.