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Finding the Fourth Proportional to 552.64, 761.52 and 455.08

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Solution

The fourth proportional to 552.64, 761.52 and 455.08 is: 627.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.64 : 761.52 = 455.08 : x
  2. Step 2: Convert to fraction form
    552.64/761.52 = 455.08/x
  3. Step 3: Cross multiply
    552.64x = 761.52 × 455.08
  4. Step 4: Simplify right side
    552.64x = 346,552.52
  5. Step 5: Solve for x
    x = 346,552.52/552.64
  6. Step 6: Final answer
    x = 627.09

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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.