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Finding the Fourth Proportional to 307.58, 425.04 and 242.60

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Solution

The fourth proportional to 307.58, 425.04 and 242.60 is: 335.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.58 : 425.04 = 242.60 : x
  2. Step 2: Convert to fraction form
    307.58/425.04 = 242.60/x
  3. Step 3: Cross multiply
    307.58x = 425.04 × 242.60
  4. Step 4: Simplify right side
    307.58x = 103,114.70
  5. Step 5: Solve for x
    x = 103,114.70/307.58
  6. Step 6: Final answer
    x = 335.25

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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.