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Finding the Fourth Proportional to 42.07, 58.08 and 35.17

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Solution

The fourth proportional to 42.07, 58.08 and 35.17 is: 48.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    42.07 : 58.08 = 35.17 : x
  2. Step 2: Convert to fraction form
    42.07/58.08 = 35.17/x
  3. Step 3: Cross multiply
    42.07x = 58.08 × 35.17
  4. Step 4: Simplify right side
    42.07x = 2,042.67
  5. Step 5: Solve for x
    x = 2,042.67/42.07
  6. Step 6: Final answer
    x = 48.55

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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.