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Finding the Fourth Proportional to 841.59, 1,262.40 and 264.47

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Solution

The fourth proportional to 841.59, 1,262.40 and 264.47 is: 396.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    841.59 : 1,262.40 = 264.47 : x
  2. Step 2: Convert to fraction form
    841.59/1,262.40 = 264.47/x
  3. Step 3: Cross multiply
    841.59x = 1,262.40 × 264.47
  4. Step 4: Simplify right side
    841.59x = 333,866.34
  5. Step 5: Solve for x
    x = 333,866.34/841.59
  6. Step 6: Final answer
    x = 396.71

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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.