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Finding the Fourth Proportional to 617.51, 925.64 and 288.55

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Solution

The fourth proportional to 617.51, 925.64 and 288.55 is: 432.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.51 : 925.64 = 288.55 : x
  2. Step 2: Convert to fraction form
    617.51/925.64 = 288.55/x
  3. Step 3: Cross multiply
    617.51x = 925.64 × 288.55
  4. Step 4: Simplify right side
    617.51x = 267,093.42
  5. Step 5: Solve for x
    x = 267,093.42/617.51
  6. Step 6: Final answer
    x = 432.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.