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Finding the Fourth Proportional to 637.41, 877.65 and 611.13

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Solution

The fourth proportional to 637.41, 877.65 and 611.13 is: 841.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.41 : 877.65 = 611.13 : x
  2. Step 2: Convert to fraction form
    637.41/877.65 = 611.13/x
  3. Step 3: Cross multiply
    637.41x = 877.65 × 611.13
  4. Step 4: Simplify right side
    637.41x = 536,358.24
  5. Step 5: Solve for x
    x = 536,358.24/637.41
  6. Step 6: Final answer
    x = 841.47

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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.