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Finding the Fourth Proportional to 42.16, 58.12 and 37.28

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Solution

The fourth proportional to 42.16, 58.12 and 37.28 is: 51.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    42.16 : 58.12 = 37.28 : x
  2. Step 2: Convert to fraction form
    42.16/58.12 = 37.28/x
  3. Step 3: Cross multiply
    42.16x = 58.12 × 37.28
  4. Step 4: Simplify right side
    42.16x = 2,166.71
  5. Step 5: Solve for x
    x = 2,166.71/42.16
  6. Step 6: Final answer
    x = 51.39

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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.