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Finding the Fourth Proportional to 202.79, 304.21 and 58.52

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Solution

The fourth proportional to 202.79, 304.21 and 58.52 is: 87.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.79 : 304.21 = 58.52 : x
  2. Step 2: Convert to fraction form
    202.79/304.21 = 58.52/x
  3. Step 3: Cross multiply
    202.79x = 304.21 × 58.52
  4. Step 4: Simplify right side
    202.79x = 17,803.20
  5. Step 5: Solve for x
    x = 17,803.20/202.79
  6. Step 6: Final answer
    x = 87.79

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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.