Home / 42.15-58.17-29.23

Finding the Fourth Proportional to 42.15, 58.17 and 29.23

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Solution

The fourth proportional to 42.15, 58.17 and 29.23 is: 40.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    42.15 : 58.17 = 29.23 : x
  2. Step 2: Convert to fraction form
    42.15/58.17 = 29.23/x
  3. Step 3: Cross multiply
    42.15x = 58.17 × 29.23
  4. Step 4: Simplify right side
    42.15x = 1,700.31
  5. Step 5: Solve for x
    x = 1,700.31/42.15
  6. Step 6: Final answer
    x = 40.34

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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.