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Finding the Fourth Proportional to 841.50, 1,262.57 and 328.54

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Solution

The fourth proportional to 841.50, 1,262.57 and 328.54 is: 492.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    841.50 : 1,262.57 = 328.54 : x
  2. Step 2: Convert to fraction form
    841.50/1,262.57 = 328.54/x
  3. Step 3: Cross multiply
    841.50x = 1,262.57 × 328.54
  4. Step 4: Simplify right side
    841.50x = 414,804.75
  5. Step 5: Solve for x
    x = 414,804.75/841.50
  6. Step 6: Final answer
    x = 492.93

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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.