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Finding the Fourth Proportional to 285.98, 394.72 and 175.52

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Solution

The fourth proportional to 285.98, 394.72 and 175.52 is: 242.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    285.98 : 394.72 = 175.52 : x
  2. Step 2: Convert to fraction form
    285.98/394.72 = 175.52/x
  3. Step 3: Cross multiply
    285.98x = 394.72 × 175.52
  4. Step 4: Simplify right side
    285.98x = 69,281.25
  5. Step 5: Solve for x
    x = 69,281.25/285.98
  6. Step 6: Final answer
    x = 242.26

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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.