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Finding the Fourth Proportional to 245.52, 338.98 and 152.40

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Solution

The fourth proportional to 245.52, 338.98 and 152.40 is: 210.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.52 : 338.98 = 152.40 : x
  2. Step 2: Convert to fraction form
    245.52/338.98 = 152.40/x
  3. Step 3: Cross multiply
    245.52x = 338.98 × 152.40
  4. Step 4: Simplify right side
    245.52x = 51,662.01
  5. Step 5: Solve for x
    x = 51,662.01/245.52
  6. Step 6: Final answer
    x = 210.42

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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.