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Finding the Fourth Proportional to 537.06, 805.70 and 190.40

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Solution

The fourth proportional to 537.06, 805.70 and 190.40 is: 285.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.06 : 805.70 = 190.40 : x
  2. Step 2: Convert to fraction form
    537.06/805.70 = 190.40/x
  3. Step 3: Cross multiply
    537.06x = 805.70 × 190.40
  4. Step 4: Simplify right side
    537.06x = 153,405.28
  5. Step 5: Solve for x
    x = 153,405.28/537.06
  6. Step 6: Final answer
    x = 285.64

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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.