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Finding the Fourth Proportional to 372.16, 558.40 and 235.36

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Solution

The fourth proportional to 372.16, 558.40 and 235.36 is: 353.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.16 : 558.40 = 235.36 : x
  2. Step 2: Convert to fraction form
    372.16/558.40 = 235.36/x
  3. Step 3: Cross multiply
    372.16x = 558.40 × 235.36
  4. Step 4: Simplify right side
    372.16x = 131,425.02
  5. Step 5: Solve for x
    x = 131,425.02/372.16
  6. Step 6: Final answer
    x = 353.14

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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.