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Finding the Fourth Proportional to 417.30, 575.40 and 267.54

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Solution

The fourth proportional to 417.30, 575.40 and 267.54 is: 368.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.30 : 575.40 = 267.54 : x
  2. Step 2: Convert to fraction form
    417.30/575.40 = 267.54/x
  3. Step 3: Cross multiply
    417.30x = 575.40 × 267.54
  4. Step 4: Simplify right side
    417.30x = 153,942.52
  5. Step 5: Solve for x
    x = 153,942.52/417.30
  6. Step 6: Final answer
    x = 368.90

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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.