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Finding the Fourth Proportional to 285.66, 394.35 and 267.24

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Solution

The fourth proportional to 285.66, 394.35 and 267.24 is: 368.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    285.66 : 394.35 = 267.24 : x
  2. Step 2: Convert to fraction form
    285.66/394.35 = 267.24/x
  3. Step 3: Cross multiply
    285.66x = 394.35 × 267.24
  4. Step 4: Simplify right side
    285.66x = 105,386.09
  5. Step 5: Solve for x
    x = 105,386.09/285.66
  6. Step 6: Final answer
    x = 368.92

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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.