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Finding the Fourth Proportional to 710.32, 1,059.94 and 637.68

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Solution

The fourth proportional to 710.32, 1,059.94 and 637.68 is: 951.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.32 : 1,059.94 = 637.68 : x
  2. Step 2: Convert to fraction form
    710.32/1,059.94 = 637.68/x
  3. Step 3: Cross multiply
    710.32x = 1,059.94 × 637.68
  4. Step 4: Simplify right side
    710.32x = 675,902.54
  5. Step 5: Solve for x
    x = 675,902.54/710.32
  6. Step 6: Final answer
    x = 951.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.