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Finding the Fourth Proportional to 355.44, 528.96 and 340.08

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Solution

The fourth proportional to 355.44, 528.96 and 340.08 is: 506.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.44 : 528.96 = 340.08 : x
  2. Step 2: Convert to fraction form
    355.44/528.96 = 340.08/x
  3. Step 3: Cross multiply
    355.44x = 528.96 × 340.08
  4. Step 4: Simplify right side
    355.44x = 179,888.72
  5. Step 5: Solve for x
    x = 179,888.72/355.44
  6. Step 6: Final answer
    x = 506.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.