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Finding the Fourth Proportional to 611.26, 841.80 and 537.55

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Solution

The fourth proportional to 611.26, 841.80 and 537.55 is: 740.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.26 : 841.80 = 537.55 : x
  2. Step 2: Convert to fraction form
    611.26/841.80 = 537.55/x
  3. Step 3: Cross multiply
    611.26x = 841.80 × 537.55
  4. Step 4: Simplify right side
    611.26x = 452,509.59
  5. Step 5: Solve for x
    x = 452,509.59/611.26
  6. Step 6: Final answer
    x = 740.29

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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.