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Finding the Fourth Proportional to 242.59, 365.35 and 215.52

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Solution

The fourth proportional to 242.59, 365.35 and 215.52 is: 324.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.59 : 365.35 = 215.52 : x
  2. Step 2: Convert to fraction form
    242.59/365.35 = 215.52/x
  3. Step 3: Cross multiply
    242.59x = 365.35 × 215.52
  4. Step 4: Simplify right side
    242.59x = 78,740.23
  5. Step 5: Solve for x
    x = 78,740.23/242.59
  6. Step 6: Final answer
    x = 324.58

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.