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Finding the Fourth Proportional to 685.34, 946.36 and 537.71

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Solution

The fourth proportional to 685.34, 946.36 and 537.71 is: 742.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    685.34 : 946.36 = 537.71 : x
  2. Step 2: Convert to fraction form
    685.34/946.36 = 537.71/x
  3. Step 3: Cross multiply
    685.34x = 946.36 × 537.71
  4. Step 4: Simplify right side
    685.34x = 508,867.24
  5. Step 5: Solve for x
    x = 508,867.24/685.34
  6. Step 6: Final answer
    x = 742.50

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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.