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Finding the Fourth Proportional to 542.33, 813.44 and 157.58

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Solution

The fourth proportional to 542.33, 813.44 and 157.58 is: 236.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.33 : 813.44 = 157.58 : x
  2. Step 2: Convert to fraction form
    542.33/813.44 = 157.58/x
  3. Step 3: Cross multiply
    542.33x = 813.44 × 157.58
  4. Step 4: Simplify right side
    542.33x = 128,177.02
  5. Step 5: Solve for x
    x = 128,177.02/542.33
  6. Step 6: Final answer
    x = 236.35

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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.