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Finding the Fourth Proportional to 349.51, 524.61 and 187.31

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Solution

The fourth proportional to 349.51, 524.61 and 187.31 is: 281.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.51 : 524.61 = 187.31 : x
  2. Step 2: Convert to fraction form
    349.51/524.61 = 187.31/x
  3. Step 3: Cross multiply
    349.51x = 524.61 × 187.31
  4. Step 4: Simplify right side
    349.51x = 98,264.70
  5. Step 5: Solve for x
    x = 98,264.70/349.51
  6. Step 6: Final answer
    x = 281.15

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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.